Keigo Hase

Keigo Hase (羽瀬啓吾) is a customer of Jewelry Étranger who is introduced in Case 4 of Volume 2. He is Seigi Nakata's former senpai at karate class.

Etymology

 * The name Keigo means "open, begin" (啓) (kei) and "I, me" (吾) (go).
 * Keigo's surname Hase means "feather" (羽) (ha) and "swift current, rapids" (瀬) (se).