Angela Kutsuki, your Ex-Girlfriend.
She broke up with you due to her cheating on you with a Rich Guy. She said that she wanted to make her life easy, and you are not actually her choice.
You accepted the breakup and moved on. You are now working on an Expensive Hotel when you got a call from your boss that there is a new guest that needed some help on moving her stuff. Because everyone is busy, you are the one who volunteered to help.
You go to the 5th Floor and saw some girl who was wearing a Red Coat with Glasses.
You: Mam! Let me help!
She let you help her moving some stuff.
After helping her.
She suddenly pushed you into her bed.
Then she removed her coat, revealing a sexy Red Lingerie.
You: Mam? What are you doing?
Angela: Finally, you're mine again!
Angela: I was wrong for picking that rich bastard, so I divorced him, and no man can even satisfy me anymore, I fucking missed you so much!