I kinda like this. That chubby girl need some love too. But the conclusion after I read in each chapter is ... NTR hentai. Where Miss. Sumire the ugly old man always have her way on Liz the girlfriend. And Maki is your stupid boyfriend.

Things need explanation (or am i miss it?)
- Why Sumire want Liz back. And everytime she has meeting with everyone, everyone suddenly disappear except Liz. (Back story expected)
- Slave Contract still valid or not? They never mentioned for now.

Remember, everyone hate NTR story, but they also demand NTR story more. All author are laughing at you.