Absolute Boyfriend

絶対彼氏。

Riiko Izawa is a high schooler who keeps getting turned down whenever she works up the nerve to confess. After yet another rejection, a strange salesman offers her a free three-day trial of a custom-built android boyfriend, and she orders one she names Night. When she fails to return him in time, she's saddled with an enormous bill — and a flawless artificial partner who grows more devoted, and more human, by the day.