Title: Osanajimi ga Do M de Tsundere Nan Desu ga
By: Nobana Saori
Summary: Susume is a total and utter masochistic bottom. He blows his nights having fun with guys, no strings attached. His crazy lifestyle then catches the attention of his childhood friend, Momo. Susume knows this and also the fact that Momo likes him, but he pretends to be oblivious. But one day, Momo tells him that he’s always loved him. And Susume’s response to that was, “Let’s try going out once”, but…
The art style is really pretty plus the story is nice xD It's the first time that I've read anything from this particular mangaka.