Asatte ni Kiss
Akihisa leaves his otaku image behind when he moves away from Tokyo, determined to live a normal school life. But a manga volume leads him to Yuu, a fellow third-year everyone else avoids. Head's up for dubcon. Asihika is drunk when they first sleep together. There was the understanding of a relationship with a physical component and he wasn't blackout drunk. Inhibitions were definitely down. They'd fooled around previously and Yuu thought they were in an exclusive relationship, so it wasn't strange to me they ended up in bed even if they should've waited (I've done this muuuch drunker so I'm obviously biased). Is this a road map to how you should behave? Probably not. (Don't be like me!) But manga doesn't exist to teach us how to behave.
Kimi ni Koisuru Hazu ga Nai
A man who adores shoujo manga finally experiences love.
Pink To Mameshiba