The Seven Magicians: Darkening the Demon King

What would happen if we traveled to the second dimension and lived in the same city with the longing second-dimensional heroine, and the heroine was a childhood sweetheart, and we were twice as happy together? My heart and my actions are as clear as a clear mirror, and everything I do is righteous As long as you are here, I can do anything scum, pervert A life-threatening place Book also known as: I will try my best to destroy the heroine's daily life This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.