Yamete Kudasai, Koishii Desu.
Ch.6.5 This one is a continuation or a spin-off of the other manga by the same author. The story starts a little complicated and skips a whole year from the other book, the couple is also introduce a little late and takes a really long time to become official. Even so the plot is still good and the story is cute and interesting. I really loved it and also loved how the story finishes with one of the guys calling the other one "little demon" which is what he called him the first time they met.
Hatsukoi Rhapsody
Zettai, Fukujuu Meirei
Ch.7.5 X3 IM EXITED FOR THIS
Yamete Kudasai, Mabushii Desu.