His (Fake) Tender Heart

From Chibi Manga:
There's a dangerous side to this kind man... Sakura, that always portrays an innofensive smile, avoids contact with people due to a trauma in the past. Claiming "Pacifism" as his motto for life, one day he is reunited with Megumi, a man that is the source of his trauma! Even though he wants to no get involved as much as possible, the man seems to have really changed and became a "Kind Man"...?