BUR #8109 has been approved by @nonamethanks.
rename rindo_(ntwewy) -> kanade_rindou
rename shoka_(ntwewy) -> sakurane_shouka
rename fret_(ntwewy) -> furesawa_tousai
rename nagi_(ntwewy) -> usui_nagi
Consistent with the rest of the names and ever since the game had its release the characters were given official full names.