Character profile
Sadamitsu Usui
碓井貞光Biography
Sadamitsu Usui is a skilled dual-sword fighter who claims to be a retired warrior. Fond of women and motivated heavily by that interest, he addresses Raikou as "Taisho" rather than using a more formal honorific.
Story spoilers
For reasons left unclear, Sadamitsu eventually joins Raikou and Tsuna's group.
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