Kenshin Blader

Kenshin Blader is a righteous shape-shifting hero. His true identity is Kenji, a young man who works part-time at a bento shop. His character is honest and sincere, and he is a good young man with a passion for justice, but because of his earnestness, he is completely immune to women.

[Spoiler] His full name is Kenji Sadamaki. He is actually the younger brother of Dr. Sadamaki of Agastia. [/Spoiler]

(Source: Official website, translated and modified)