Wikipedia
Retsu
(also romanized Retu in the Kunrei-shiki system) is a Japanese word meaning "violent".
Retsu is also the name of the following fictional characters:
- Retsu Unohana, a character from the manga and anime Bleach
- Retsu, a character from the game Street Fighter
- Retu, the final boss from the game Final Fight 2
- Retsu Seiba, one of the main characters of Bakusō Kyōdai Let's & Go!!
- Retsu Fukami, main character from the 2007 Japanese tokusatsu television series, Juken Sentai Gekiranger.