Thanks to Rin Itoshi's screamer and some solid defending in the dying minutes of the first half, the Blue Lock Eleven are up 2-1 against the U-20 Japan team. Morale is running low in the U-20 locker room, and things only get worse when Sae Itoshi threatens to leave. Just then, an ominous figure emerges from the wings… The demon striker Ryusei Shidou is finally loose and ready to run rampant!