Kabe ni Ana Ari Futago de
Complete | Yun Kinoko | 2000 released
If noncon or violence aren't your jam, if you don't like coercion or bullying. Stay away from this one. It's not a cute story. It's a very messed up story with a mostly happy ending. If you like a little depravity with your smut, it's a decent story.
The Twins and Me