Ai ga Omoi Jirai-Kei Vampire [remake]愛が重い地雷系ヴァンパイア; A Landmine Vampire Whose Love is Too Heavy; Vampire with Too Much Love

The main character, Shin, works hard to support his older sister and younger brother. One day, on his way home from work, he meets a girl who claims to be a vampire, and she demands his blood...? This is the beginning of a slightly exciting brand new love story!