Daisy's manga / #age gap(107)

Itou Katsuya has been living with his guardian, a young man named Tooru, after the death of his only parent, his mother. It seems like Katsuya is having problems recalling the incident and couldn’t even remember how she died in the first place. To makes matters worse for poor Katsuya, he harbours conflicting feelings that are beyond what a son would normally feel for a father. Thus, life with Tooru during his puberty is pure torture. One day, he met a man claimed to be his deceased mother’s old friend. He was told that his mother perished in a hit-and-run accident and that even until today, the culprit hadn’t been caught yet. Katsuya embarks on a journey to find the killer while battling his sinful feelings for his foster father, Tooru…

After his apartment was burnt down to ash, Koide Yuu got to stay in a high class mansion because of his wealthy friend's help. However, the situation changed drastically when his friend's brother, Oosawa Masakuni suddenly appeared at the mansion. And then the days Yuu became Masakuni's guinea pig for his sex experiments (which he had no choice but to agree in order to pay for the rent and compensation for an antique vase he broke) began!

Sin:Single guy Soushi and divorcee Atsumu find themselves living together due to a mix-up by their landlady. Despite being complete strangers, they end up getting along, and soon Soushi realizes that he?s falling for Atsumu. But Atsumu seems to already be in a relationship?