Suzuki Just Wants a Quiet Life(2014)

Suzuki-san wa Tada Shizuka ni Kurashitai

After his mother is murdered, Jinsuke runs away with his mysterious neighbor, Suzuki, who has a dark secret. Suzuki seeks to find a quiet life, Jinsuke dreams only of revenge as he decides to take matters into his own hands…

(Source: Azuki)

Note: Includes one extra chapter in volume 2.