Naofumi exploits Glass's weakness to SP-draining attacks using his Soul Eater Shield. The fight ends in a stalemate as the Wave's time limit expires, forcing the other-world heroes to retreat.
See the final moments and analysis of Naofumi's journey in these episode recaps: Season 1 Finale! | The Rising of the Shield Hero Episode 25 YouTube · King of Aeons Tate no Yuusha no Nariagari Episode 25
While the other three heroes—Ren, Itsuki, and Motoyasu—treat the world like a game, Naofumi’s power comes from his deep emotional ties. | The Rising of the Shield Hero Episode
In Episode 25 of The Rising of the Shield Hero (Season 1 finale), the "deep story" revolves around the revelation that the Waves of Catastrophe are not just a monster invasion, but a survival conflict between parallel worlds . The Conflict of Survival Tate no Yuusha no Nariagari Episode 25
Glass asks why he fights for a world that has treated him with nothing but discrimination and grief .