ritsu-sama's manga / #bookstore(1)

1st couple (c. 1 e 2 ) - seme confess to uke, but uke takes it as a joke. Seme starts to work at the same bookstore as the uke and tells him to forget. Uke cant forget and forgo and starts to see seme's good points "i am regreting rejecting u" . Seme overhears uke likes short hair (he was talking about some model) so seme cuts his hair. uke drunks and confess, they have sex. the one where the seme reads the guide for gay sex 2nd couple (c.3) - seme's starts to see a ghost who is very cheerful and cute. he doesnt want to cohabitat but kinds get used and starts to like the life together. 3rd couple (c.4) - seme used to bully a boy in his childhood and have neve forgotten him. Said boy comes back to the city , though smee doesnt recognize him, he befriends this boy, they get really close, seme confessess and they start dating. Then seme starts to get bullied. Because of a strap, he discovers that the identity of the bully is his lover who is the same kid he bullied. He then appologizes for his pasts mistakes, uke says he is not the same boy he used to hate. They make up, have sex and get closer. uke is tough to him but really cute in bed (extra in c. 5) 4th couple (c.5) - seme adopts a cat that looks exactaly like his dead lover and have sex with him? it's a bit disturbing actually