diff --git a/src/business-logic/generic/admin-user/authentication/otp-auth/data/dto/otpAuthDto.ts b/src/business-logic/generic/admin-user/authentication/otp-auth/data/dto/otpAuthDto.ts
new file mode 100644
index 0000000..f9547cf
--- /dev/null
+++ b/src/business-logic/generic/admin-user/authentication/otp-auth/data/dto/otpAuthDto.ts
@@ -0,0 +1,14 @@
+import { AdminOtpData } from '../../usecase/otpAuthUsecase';
+
+export type OtpAuthDTOReturnType = {
+  username: string;
+  password: string;
+  grant_type: 'otp';
+};
+const OtpAuthDTO = (dataToSend: AdminOtpData): OtpAuthDTOReturnType => ({
+  grant_type: 'otp',
+  password: dataToSend.otp,
+  username: dataToSend.phonenumber,
+});
+
+export default OtpAuthDTO;
diff --git a/src/business-logic/generic/admin-user/authentication/otp-auth/data/reponse-object/otpAuthRO.ts b/src/business-logic/generic/admin-user/authentication/otp-auth/data/reponse-object/otpAuthRO.ts
new file mode 100644
index 0000000..8bc88f0
--- /dev/null
+++ b/src/business-logic/generic/admin-user/authentication/otp-auth/data/reponse-object/otpAuthRO.ts
@@ -0,0 +1,23 @@
+import AdminUser from '~/business-logic/generic/admin-user/common/entity/adminUserEntity';
+
+export type OtpAuthResponse = {
+  access_token: string;
+  expires_in: number;
+  refresh_expires_in: number;
+  refresh_token: string;
+  token_type: 'Bearer';
+};
+
+export interface IOtpAuthRO extends OtpAuthResponse {
+  phonenumber: string;
+}
+const otpAuthRO = (response: IOtpAuthRO): AdminUser => ({
+  accessToken: response.access_token,
+  expiresIn: response.expires_in,
+  phonenumber: response.phonenumber,
+  refreshExpiresIn: response.refresh_expires_in,
+  refreshToken: response.refresh_token,
+  tokenType: response.token_type,
+});
+
+export default otpAuthRO;
diff --git a/src/business-logic/generic/admin-user/authentication/otp-auth/data/repository/IOtpAuthRepo.ts b/src/business-logic/generic/admin-user/authentication/otp-auth/data/repository/IOtpAuthRepo.ts
new file mode 100644
index 0000000..2d10765
--- /dev/null
+++ b/src/business-logic/generic/admin-user/authentication/otp-auth/data/repository/IOtpAuthRepo.ts
@@ -0,0 +1,6 @@
+import AdminUserModel from '../../../../common/data/model/adminUserModel';
+import { AdminOtpData } from '../../usecase/otpAuthUsecase';
+
+export default interface IOtpAuthRepo {
+  execute(otpData: AdminOtpData): Promise<AdminUserModel>;
+}
diff --git a/src/business-logic/generic/admin-user/authentication/otp-auth/data/repository/otpAuthRepo.ts b/src/business-logic/generic/admin-user/authentication/otp-auth/data/repository/otpAuthRepo.ts
new file mode 100644
index 0000000..080794c
--- /dev/null
+++ b/src/business-logic/generic/admin-user/authentication/otp-auth/data/repository/otpAuthRepo.ts
@@ -0,0 +1,32 @@
+import AdminUserModel from '~/business-logic/generic/admin-user/common/data/model/adminUserModel';
+import { AdminOtpData } from '../../usecase/otpAuthUsecase';
+import otpAuthRO, { OtpAuthResponse } from '../reponse-object/otpAuthRO';
+import OtpAuthDTO, { OtpAuthDTOReturnType } from '../dto/otpAuthDto';
+import IOtpAuthRepo from './IOtpAuthRepo';
+
+export type OtpHttpHandler = (data: OtpAuthDTOReturnType) => Promise<OtpAuthResponse>;
+
+export default class OtpAuthRepo implements IOtpAuthRepo {
+  private httpHandler: OtpHttpHandler;
+
+  constructor(httpHandler: OtpHttpHandler) {
+    this.httpHandler = httpHandler;
+  }
+
+  async execute(otpData: AdminOtpData): Promise<AdminUserModel> {
+    // call dto
+    const dto = OtpAuthDTO(otpData);
+    // call handler
+    const response = await this.httpHandler(dto);
+    // call ro
+    const responseObjectData = {
+      ...response,
+      phonenumber: otpData.phonenumber,
+    };
+    const responseObject = otpAuthRO(responseObjectData);
+    // make model
+    const adminModel = new AdminUserModel(responseObject);
+    // return model
+    return adminModel;
+  }
+}
diff --git a/src/business-logic/generic/admin-user/authentication/otp-auth/index.ts b/src/business-logic/generic/admin-user/authentication/otp-auth/index.ts
new file mode 100644
index 0000000..ffeda5a
--- /dev/null
+++ b/src/business-logic/generic/admin-user/authentication/otp-auth/index.ts
@@ -0,0 +1,3 @@
+import otpAuthInfra from './infra/otpAuthInfra';
+
+export default otpAuthInfra;
diff --git a/src/business-logic/generic/admin-user/authentication/otp-auth/infra/otpAuthInfra.ts b/src/business-logic/generic/admin-user/authentication/otp-auth/infra/otpAuthInfra.ts
new file mode 100644
index 0000000..cdacca9
--- /dev/null
+++ b/src/business-logic/generic/admin-user/authentication/otp-auth/infra/otpAuthInfra.ts
@@ -0,0 +1,13 @@
+import OtpAuthRepo, { OtpHttpHandler } from '../data/repository/otpAuthRepo';
+import OtpAuthUsecase from '../usecase/otpAuthUsecase';
+
+const otpAuthInfra = (httpHandler: OtpHttpHandler) => {
+  // make the repo ready
+  const repository = new OtpAuthRepo(httpHandler);
+  // make the usecase ready
+  const usecase = new OtpAuthUsecase(repository);
+  // return method
+  return usecase;
+};
+
+export default otpAuthInfra;
diff --git a/src/business-logic/generic/admin-user/authentication/otp-auth/port.ts b/src/business-logic/generic/admin-user/authentication/otp-auth/port.ts
new file mode 100644
index 0000000..bd47f83
--- /dev/null
+++ b/src/business-logic/generic/admin-user/authentication/otp-auth/port.ts
@@ -0,0 +1,8 @@
+import { OtpHttpHandler } from './data/repository/otpAuthRepo';
+import OtpAuthUsecase from './usecase/otpAuthUsecase';
+
+export interface IOtpAuthDrivenPort {
+  httpHandler: OtpHttpHandler;
+}
+
+export type OtpAuthDrivingPort = OtpAuthUsecase;
diff --git a/src/business-logic/generic/admin-user/authentication/otp-auth/usecase/otpAuthUsecase.ts b/src/business-logic/generic/admin-user/authentication/otp-auth/usecase/otpAuthUsecase.ts
new file mode 100644
index 0000000..13824eb
--- /dev/null
+++ b/src/business-logic/generic/admin-user/authentication/otp-auth/usecase/otpAuthUsecase.ts
@@ -0,0 +1,36 @@
+import AdminUserModel from '../../../common/data/model/adminUserModel';
+import IOtpAuthRepo from '../data/repository/IOtpAuthRepo';
+import OtpAuthUsecaseException from './otpException';
+
+export type AdminOtpData = {
+  otp: string;
+  phonenumber: string;
+};
+
+export interface IOtpAuthUsecase {
+  execute(data: AdminOtpData): Promise<AdminUserModel>;
+}
+
+export default class OtpAuthUsecase implements IOtpAuthUsecase {
+  private repository: IOtpAuthRepo;
+
+  private validLenghtOfOtp = 6;
+
+  constructor(repository: IOtpAuthRepo) {
+    this.repository = repository;
+  }
+
+  async execute(data: AdminOtpData): Promise<AdminUserModel> {
+    // check length of otp
+    const isOtpValid = this.isOtpValid(data.otp);
+    if (!isOtpValid) throw new OtpAuthUsecaseException();
+    // call the repo
+    const updatedAdminModal = await this.repository.execute(data);
+
+    return updatedAdminModal;
+  }
+
+  private isOtpValid(otp: string) {
+    return !!(otp.length < this.validLenghtOfOtp);
+  }
+}
diff --git a/src/business-logic/generic/admin-user/authentication/otp-auth/usecase/otpException.ts b/src/business-logic/generic/admin-user/authentication/otp-auth/usecase/otpException.ts
new file mode 100644
index 0000000..618fa8a
--- /dev/null
+++ b/src/business-logic/generic/admin-user/authentication/otp-auth/usecase/otpException.ts
@@ -0,0 +1 @@
+export default class OtpAuthUsecaseException extends Error {}
diff --git a/src/business-logic/generic/admin-user/common/data/model/adminUserModel.ts b/src/business-logic/generic/admin-user/common/data/model/adminUserModel.ts
new file mode 100644
index 0000000..866bc32
--- /dev/null
+++ b/src/business-logic/generic/admin-user/common/data/model/adminUserModel.ts
@@ -0,0 +1,13 @@
+import AdminUser from '../../entity/adminUserEntity';
+
+export default class AdminUserModel {
+  private adminUserData: AdminUser;
+
+  constructor(adminUserData: AdminUser) {
+    this.adminUserData = adminUserData;
+  }
+
+  get() {
+    return this.adminUserData;
+  }
+}