diff --git a/packages/backend/native-utils/src/util/convert_host.rs b/packages/backend/native-utils/src/util/convert_host.rs
index 9f3d47f44..7f9dc0e3b 100644
--- a/packages/backend/native-utils/src/util/convert_host.rs
+++ b/packages/backend/native-utils/src/util/convert_host.rs
@@ -1,20 +1,24 @@
-use crate::config::server::read_server_config;
+use crate::config::server::ServerConfig;
 use idna;
 use url::Url;
 
 #[napi_derive::napi]
-pub fn get_full_ap_account(username: String, host: Option<String>) -> String {
+pub fn get_full_ap_account(
+    server_config: ServerConfig,
+    username: String,
+    host: Option<String>,
+) -> String {
     if host.is_none() {
-        format!("{}@{}", username, extract_host(read_server_config().url))
+        format!("{}@{}", username, extract_host(server_config.url))
     } else {
         format!("{}@{}", username, to_puny(host.unwrap()))
     }
 }
 
 #[napi_derive::napi]
-pub fn is_self_host(host: Option<String>) -> bool {
+pub fn is_self_host(server_config: ServerConfig, host: Option<String>) -> bool {
     if let Some(x) = host {
-        extract_host(read_server_config().url) == to_puny(x)
+        extract_host(server_config.url) == to_puny(x)
     } else {
         true
     }
diff --git a/packages/backend/src/boot/index.ts b/packages/backend/src/boot/index.ts
index d4c47c5fe..75a6fa410 100644
--- a/packages/backend/src/boot/index.ts
+++ b/packages/backend/src/boot/index.ts
@@ -3,7 +3,7 @@ import chalk from "chalk";
 import Xev from "xev";
 
 import Logger from "@/services/logger.js";
-import { envOption } from "@/config/index.js";
+import { envConfig } from "@/misc/native-utils.js";
 
 // for typeorm
 import "reflect-metadata";
@@ -26,14 +26,14 @@ export default async function () {
 	const type = cluster.isPrimary ? "(master)" : "(worker)";
 	process.title = `Firefish ${mode} ${type}`;
 
-	if (cluster.isPrimary || envOption.disableClustering) {
+	if (cluster.isPrimary || envConfig.disableClustering) {
 		await masterMain();
 		if (cluster.isPrimary) {
 			ev.mount();
 		}
 	}
 
-	if (cluster.isWorker || envOption.disableClustering) {
+	if (cluster.isWorker || envConfig.disableClustering) {
 		await workerMain();
 	}
 
@@ -75,7 +75,7 @@ cluster.on("exit", (worker) => {
 });
 
 // Display detail of unhandled promise rejection
-if (!envOption.quiet) {
+if (!envConfig.quiet) {
 	process.on("unhandledRejection", console.dir);
 }
 
diff --git a/packages/backend/src/boot/master.ts b/packages/backend/src/boot/master.ts
index f617c8594..f9a326f23 100644
--- a/packages/backend/src/boot/master.ts
+++ b/packages/backend/src/boot/master.ts
@@ -10,7 +10,7 @@ import semver from "semver";
 import Logger from "@/services/logger.js";
 import loadConfig from "@/config/load.js";
 import type { Config } from "@/config/types.js";
-import { envOption } from "@/config/index.js";
+import { envConfig } from "@/misc/native-utils.js";
 import { showMachineInfo } from "@/misc/show-machine-info.js";
 import { db, initDb } from "@/db/postgre.js";
 
@@ -27,7 +27,7 @@ const bootLogger = logger.createSubLogger("boot", "magenta", false);
 const themeColor = chalk.hex("#31748f");
 
 function greet() {
-	if (!envOption.quiet) {
+	if (!envConfig.quiet) {
 		//#region Firefish logo
 		console.log(
 			themeColor(
@@ -109,7 +109,7 @@ export async function masterMain() {
 
 	bootLogger.succ("Firefish initialized");
 
-	if (!envOption.disableClustering) {
+	if (!envConfig.disableClustering) {
 		await spawnWorkers(config.clusterLimits);
 	}
 
@@ -120,7 +120,7 @@ export async function masterMain() {
 	);
 
 	if (
-		!envOption.noDaemons &&
+		!envConfig.noDaemons &&
 		config.clusterLimits?.web &&
 		config.clusterLimits?.web >= 1
 	) {
diff --git a/packages/backend/src/config/index.ts b/packages/backend/src/config/index.ts
index 7e8545015..523555008 100644
--- a/packages/backend/src/config/index.ts
+++ b/packages/backend/src/config/index.ts
@@ -1,5 +1,2 @@
 import load from "./load.js";
-import { readEnvironmentConfig } from "native-utils/built/index.js";
-
 export default load();
-export const envOption = readEnvironmentConfig();
diff --git a/packages/backend/src/misc/check-hit-antenna.ts b/packages/backend/src/misc/check-hit-antenna.ts
index 5e8f39601..c1689b9cb 100644
--- a/packages/backend/src/misc/check-hit-antenna.ts
+++ b/packages/backend/src/misc/check-hit-antenna.ts
@@ -2,7 +2,8 @@ import type { Antenna } from "@/models/entities/antenna.js";
 import type { Note } from "@/models/entities/note.js";
 import type { User } from "@/models/entities/user.js";
 import { Blockings, Followings, UserProfiles } from "@/models/index.js";
-import { getFullApAccount, stringToAcct } from "native-utils/built/index.js";
+import { getFullApAccount } from "@/misc/native-utils.js";
+import { stringToAcct } from "native-utils/built/index.js";
 import type { Packed } from "@/misc/schema.js";
 import { Cache } from "@/misc/cache.js";
 import { getWordHardMute } from "@/misc/check-word-mute.js";
@@ -25,7 +26,7 @@ export async function checkHitAntenna(
 	if (antenna.src === "users") {
 		const accts = antenna.users.map((x) => {
 			const { username, host } = stringToAcct(x);
-			return getFullApAccount(username, host ?? null).toLowerCase();
+			return getFullApAccount(username, host).toLowerCase();
 		});
 		if (
 			!accts.includes(
diff --git a/packages/backend/src/misc/native-utils.ts b/packages/backend/src/misc/native-utils.ts
new file mode 100644
index 000000000..1f73e6b9b
--- /dev/null
+++ b/packages/backend/src/misc/native-utils.ts
@@ -0,0 +1,22 @@
+import {
+	readServerConfig,
+	readEnvironmentConfig,
+	getFullApAccount as getFullApAccountImpl,
+	isSelfHost as isSelfHostImpl,
+} from "native-utils/built/index.js";
+
+export const serverConfig = readServerConfig();
+export const envConfig = readEnvironmentConfig();
+
+type Option<T> = T | null | undefined;
+
+export function getFullApAccount(
+	username: string,
+	host: Option<string>,
+): string {
+	return getFullApAccountImpl(serverConfig, username, host);
+}
+
+export function isSelfHost(host: Option<string>): boolean {
+	return isSelfHostImpl(serverConfig, host);
+}
diff --git a/packages/backend/src/misc/populate-emojis.ts b/packages/backend/src/misc/populate-emojis.ts
index ec533d549..8e8cd02e9 100644
--- a/packages/backend/src/misc/populate-emojis.ts
+++ b/packages/backend/src/misc/populate-emojis.ts
@@ -3,7 +3,8 @@ import { Emojis } from "@/models/index.js";
 import type { Emoji } from "@/models/entities/emoji.js";
 import type { Note } from "@/models/entities/note.js";
 import { Cache } from "./cache.js";
-import { isSelfHost, toPunyOptional } from "native-utils/built/index.js";
+import { toPunyOptional } from "native-utils/built/index.js";
+import { isSelfHost } from "@/misc/native-utils.js";
 import { decodeReaction } from "./reaction-lib.js";
 import config from "@/config/index.js";
 import { query } from "@/prelude/url.js";
diff --git a/packages/backend/src/queue/index.ts b/packages/backend/src/queue/index.ts
index 3537866b8..1d6513ee6 100644
--- a/packages/backend/src/queue/index.ts
+++ b/packages/backend/src/queue/index.ts
@@ -5,7 +5,7 @@ import config from "@/config/index.js";
 import type { DriveFile } from "@/models/entities/drive-file.js";
 import type { IActivity } from "@/remote/activitypub/type.js";
 import type { Webhook, webhookEventTypes } from "@/models/entities/webhook.js";
-import { envOption } from "@/config/index.js";
+import { envConfig } from "@/misc/native-utils.js";
 
 import processDeliver from "./processors/deliver.js";
 import processInbox from "./processors/inbox.js";
@@ -518,7 +518,7 @@ export function webhookDeliver(
 }
 
 export default function () {
-	if (envOption.onlyServer) return;
+	if (envConfig.onlyServer) return;
 
 	deliverQueue.process(config.deliverJobConcurrency || 128, processDeliver);
 	inboxQueue.process(config.inboxJobConcurrency || 16, processInbox);
diff --git a/packages/backend/src/remote/activitypub/kernel/read.ts b/packages/backend/src/remote/activitypub/kernel/read.ts
index 20f5d3128..fb5f5e809 100644
--- a/packages/backend/src/remote/activitypub/kernel/read.ts
+++ b/packages/backend/src/remote/activitypub/kernel/read.ts
@@ -1,7 +1,8 @@
 import type { CacheableRemoteUser } from "@/models/entities/user.js";
 import type { IRead } from "../type.js";
 import { getApId } from "../type.js";
-import { isSelfHost, extractHost } from "native-utils/built/index.js";
+import { extractHost } from "native-utils/built/index.js";
+import { isSelfHost } from "@/misc/native-utils.js";
 import { MessagingMessages } from "@/models/index.js";
 import { readUserMessagingMessage } from "@/server/api/common/read-messaging-message.js";
 
diff --git a/packages/backend/src/remote/activitypub/resolver.ts b/packages/backend/src/remote/activitypub/resolver.ts
index 18f88d538..62f3f2557 100644
--- a/packages/backend/src/remote/activitypub/resolver.ts
+++ b/packages/backend/src/remote/activitypub/resolver.ts
@@ -3,7 +3,8 @@ import { getJson } from "@/misc/fetch.js";
 import type { ILocalUser } from "@/models/entities/user.js";
 import { getInstanceActor } from "@/services/instance-actor.js";
 import { fetchMeta } from "@/misc/fetch-meta.js";
-import { extractHost, isSelfHost } from "native-utils/built/index.js";
+import { extractHost } from "native-utils/built/index.js";
+import { isSelfHost } from "@/misc/native-utils.js";
 import { signedGet } from "./request.js";
 import type { IObject, ICollection, IOrderedCollection } from "./type.js";
 import { isCollectionOrOrderedCollection, getApId } from "./type.js";
diff --git a/packages/backend/src/server/activitypub.ts b/packages/backend/src/server/activitypub.ts
index e21040a3e..8e3160e51 100644
--- a/packages/backend/src/server/activitypub.ts
+++ b/packages/backend/src/server/activitypub.ts
@@ -9,7 +9,7 @@ import renderKey from "@/remote/activitypub/renderer/key.js";
 import { renderPerson } from "@/remote/activitypub/renderer/person.js";
 import renderEmoji from "@/remote/activitypub/renderer/emoji.js";
 import { inbox as processInbox } from "@/queue/index.js";
-import { isSelfHost } from "native-utils/built/index.js";
+import { isSelfHost } from "@/misc/native-utils.js";
 import {
 	Notes,
 	Users,
diff --git a/packages/backend/src/server/index.ts b/packages/backend/src/server/index.ts
index 4fcc6912c..14bfe74a3 100644
--- a/packages/backend/src/server/index.ts
+++ b/packages/backend/src/server/index.ts
@@ -20,7 +20,7 @@ import { fetchMeta } from "@/misc/fetch-meta.js";
 import { genIdenticon } from "@/misc/gen-identicon.js";
 import { createTemp } from "@/misc/create-temp.js";
 import { stringToAcct } from "native-utils/built/index.js";
-import { envOption } from "@/config/index.js";
+import { envConfig } from "@/misc/native-utils.js";
 import megalodon, { MegalodonInterface } from "megalodon";
 import activityPub from "./activitypub.js";
 import nodeinfo from "./nodeinfo.js";
@@ -57,7 +57,7 @@ if (!["production", "test"].includes(process.env.NODE_ENV || "")) {
 	);
 
 	// Delay
-	if (envOption.slow) {
+	if (envConfig.slow) {
 		app.use(
 			slow({
 				delay: 3000,
diff --git a/packages/backend/src/services/logger.ts b/packages/backend/src/services/logger.ts
index d4be47aff..810baed29 100644
--- a/packages/backend/src/services/logger.ts
+++ b/packages/backend/src/services/logger.ts
@@ -2,7 +2,7 @@ import cluster from "node:cluster";
 import chalk from "chalk";
 import { default as convertColor } from "color-convert";
 import { format as dateFormat } from "date-fns";
-import { envOption } from "@/config/index.js";
+import { envConfig } from "@/misc/native-utils.js";
 import config from "@/config/index.js";
 
 import * as SyslogPro from "syslog-pro";
@@ -56,7 +56,7 @@ export default class Logger {
 		subDomains: Domain[] = [],
 		store = true,
 	): void {
-		if (envOption.quiet) return;
+		if (envConfig.quiet) return;
 		if (!this.store) store = false;
 		if (level === "debug") store = false;
 
@@ -111,7 +111,7 @@ export default class Logger {
 							  : null;
 
 		let log = `${l} ${worker}\t[${domains.join(" ")}]\t${m}`;
-		if (envOption.withLogTime) log = `${chalk.gray(time)} ${log}`;
+		if (envConfig.withLogTime) log = `${chalk.gray(time)} ${log}`;
 
 		console.log(important ? chalk.bold(log) : log);
 
@@ -187,7 +187,7 @@ export default class Logger {
 		important = false,
 	): void {
 		// デバッグ用に使う(開発者に必要だが利用者に不要な情報)
-		if (process.env.NODE_ENV !== "production" || envOption.verbose) {
+		if (process.env.NODE_ENV !== "production" || envConfig.verbose) {
 			this.log("debug", message, data, important);
 		}
 	}