The protagnost is a failing businessman that is currently employed by his sister-in-law, Fuyuka. However, he spends his days being scorned and despised. Moreover, he's also a freeloader at his brother's house and treated badly by his other sister-in-law, Natsuki.

One day, while investigating the suspicious "YAMI Site", he comes across a hyponsis device. Using this, he is going to change his life.

[Translated from Official Site]