Youkya ga Inkya no Tonari ni Hikkoshite Kita ken

"I won't reject you and that's what I've decided!" He has a strong a body and a blinding smile. Onoda Ken whose energetic personality is his strong point has just taken his first step as a working adult! But for some reason, after moving to Tokyo, he's been finding razor blades and garbage scraps in his apartment's mailbox... Just who is the bastard harassing me!? After great difficulty, he finally found the culprit and it turned out to be Yodokawa Hiromi, the gloomy shut-in ronin next door! A pure and cheery guy VS a pure but gloomy guy! Will these two ever be able to understand each other?