It was a tragedy manga where the mc lost his beloved dog. The dog's soul took a form of a human, that only the mc can see it. The dog's soul even follow him to school. Idk if its a dog or a cat, i cant remember. It was depressing
http://www.mangago.me/read-manga/traumatic_phantasm/This one?
No no :( there was no sex scene but thanks for bringing that up tho (●'◡'●)ﾉ
http://www.mangago.me/read-manga/mahoroba_no_hibi/
It was a tragedy manga where the mc lost his beloved dog. The dog's soul took a form of a human, that only the mc can see it. The dog's soul even follow him to school. Idk if its a dog or a cat, i cant remember. It was depressing