ch.1-1.5
Oneshot ch.6
Oku met Nana again after they slept together long ago. In the past, Nana is a The Prince of Good Fortune, there was a jinx that any woman who slept with him would be come lucky and fulfil their wish. So, Oku asked Nana to try sleep with him if he can also make guys lucky as well. However, Oku's purpose wasn't about luck but his secret feeling.
Oneshot ch.1
For that one I'm not quite sure.
Oneshot p.149-174 + 213-215
Story ch.1-4
Oneshot ch.4
Nakajima is always trying to advise his spoiled subordinate Aoi. But when Aoi asks for help on how to confess to a guy...
Junjou Bitch, Hatsukoi Kei