multiple stories
1. hs baseball mates meet again one day and started living together, aoki is the blunt and hardworking type. hoshitani acts as a housewife as his way of payment for letting him stay.
2. duo pervert. stalker x one who gets excited in suspicious situation. asakura likes to take photos and collecting nagatsuka's used stuff and dedicate them in a single room. as nagatsuka's apartment got burnt down, they started living together and when nagatsuka found out they started making out.
3. akabane woke up after a one night stand that he could not remember the face but he remembered the pained expression. as he thought it would be the cheerful arimura, it turns out it is the gloomy souma who had a crush on him since reading his poems.
4. the top two in sales department is competing and when Niwa won against his senpai Ootsuki, they started the masterxslave relationship for seven days though it is just doing odd jobs. both of them are competent and compatible. as the seventh day arrived they confessed to each other and bam! rooftop sex
5. finally, the story from the title. Satoru works at a bar where Arimura is a frequent customer. The straight Satoru slept with Arimura one day and Satoru got hooked. They met at a library again and as Arimura was running away from Satoru because of his confession he got so drunk and almost went to a hotel with another man when Satoru stopped them. Arimura woke up in a hotel with Satoru and they confess to each other.
Inukei Danshi ni Natsukarechuu