Destiny Star Girlfriend 2 [v1.0.0] [mirai/Shiravune]

This is the sequel to Shukusei no Girlfriend, and it is the second of three planned games. Seiji is an ordinary student who met a girl named Maja in the park. He was charmed by her demeanour, despite not knowing that she was actually a mahou shoujo that fights demons using dark magic via a contract with an evil deity. After a sudden appearance by some demons, he ended up as her familiar and gained the ability to use magic. In return, he was bound by a magical rope on his ankle to her, and if he strayed too far away from her, his magical power will run out and he will perish. So they ended up living together under the same roof. However, her slightly eccentric nature meant that unexpected incidents were a commonplace.