Kaido: Touge No Densetsu Extra RP
Select Record Challenge mode, then hold L1 + L2 + R1 + R2 and press Down, Left, Up, Right. This can be repeated as many times as desired. You will get 999 RP for Record Challenge, Record Tour, and Versus modes.
The image featured at the top of this post is ©The Legend of Heroes: Trails of Cold Steel III key art / Original