Tensei Shitara Hime datta Node Dansou Joshi Kiwamete Saikyou Mahoutsukai Mezasu wa.

Ikuto, a high school boy who loves shounen manga, is reincarnated in a magical world as a princess named Isabella. At first, Ikuto is happy because he always wished to be able to use magic. However, custom dictates, "The source of happiness for a woman is to devote herself to her husband" and "Women should not touch such barbaric things as magic...