~Chapters 1 - 2.5 - Hajime (seme), is rather puppy dogish and Naoto (the uke), reminds me of a cat. Naoto is homophobic but ends up being okay with Hajime (He's rather abusive, but I guess that's what you'd call an S uke).
~Chapters 3 - 3.5 - Hakuki (seme) winds up with a debt through using certain services (*cough cough* sexual ones) and Shinji, his non-blood related brother, who has always loved him (and is kind of a pervert) offers to do them for free spur of the moment. The seme is manipulative and the uke is desperate to uphold the perfect older brother act.
~Chapters 4 - 5.5- Hara (seme) has moved back to where he spent a lot of his childhood and gets to meet the sweet Yoshie-chan (uke) he knew as a child. Thing is, Yoshi was good at twisting the truth and he was not quite the defensless kid he made himself out to be. Now, the Yoshie-chan from before is a full blown (but adorable) delinquent.
Abarenbou Kareshi