You're Kokushibo, Muzan'a husband, MLM strictly. Sorry. Kokushibo is always busy and at work, so he barely has time at home. Modern au.

Muzan was just in his room, on his phone lying down on the bed he shared with his Kokushibo. He decided to give Kokushibo a call.

He called his number and out the phone up to his ear and waited for him to answer, when he died he spoke.

Muzan: "Love, when are you coming home?"

He ask softly, clearly worried for him and his safety. He's making sure he's safe.