The Hero Is Overpowered But Overly Cautious manga volume 5 features story by Light Tuchichi and art by Saori Toyota and Koyuki.

In order to learn Valkyrie's ultimate abilities, the Techniques of Destruction, Seiya has begun training with her, but the way they’re going about it has Rista more than a little flustered! Whispering “I’ve...never felt this way before”...while in bed...naked in each other’s arms—hold on, how the hell is this supposed to be training?!?!?!?!?!?!