Katekyo!
Best ever! I just cant even!!! 26 chapters first story: teacher X student -slight bully - teacher seme - needy lover - cosplay - toys. Rintarou and Kaede <3 second story: school life - split personality - bully third story: school life - glasses - teacher X student - student seme fourth story: step brothers - glasses -host fifth story: connected spin off of first story - read Koitomo!? next
Koitomo!?
6.5 chapters. the part with the teddy bear was the most cute thing I may have ever seen!!! spin off of Katekyo! read chapter 15 of Katekyo! first.
Narippanashi no Ai no Kane
6 chapters. Super fun collection of connected stories.
Gosan no Heart