Arc 4Sabotage and Monolith Code
Yunyi exposed No Head Dragon’s interference, faced attacks and rivalry while helping First High recover from Mari’s injury, and drew Mayumi closer despite their conflict over his plans. After joining Tatsuya and Mikihiko in Monolith Code, Yunyi prepared to face Masaki’s team himself.
- Yunyi won the Icicle Destruction matches despite a tampered CAD, then reconciled with Mayumi after she confronted him about leaving Mari exposed to danger.
- Yunyi and Katsuto warned First High’s students about further sabotage, but Morisaki was seriously injured in an attack during Monolith Code.
- Yunyi helped Shizuku use Cremation against Miyuki, then trained Mayumi to replace Mari in upcoming events.
- Yunyi arranged for Tatsuya and Mikihiko to join First High’s Monolith Code team and was pulled into the lineup himself at Mayumi’s insistence.
- Yunyi rejected Masaki’s offer to transfer to Third High and learned that the people taken from the shut-down laboratory had disappeared after military questioning.
- Yunyi, Tatsuya, and Mikihiko defeated Seventh High School in Monolith Code, with Yunyi concealing their monument and trapping two opponents in his swamp magic.
- After Tatsuya and Mikihiko won their canyon match, Yunyi told them to sit out against Third High and challenged Masaki’s team alone.