Episode 12 marks the beginning of the Second Selection arc, focusing on the following major developments:

While Episode 12 starts the arc, in the manga actually marks its conclusion. In this volume, the 35 strikers who successfully navigated the Second Selection prepare for their massive showdown against the Japan U-20 National Team .

: Players must form groups of three to proceed.

: After clearing the solo stage, Isagi joins forces with Bachira and Nagi , who chooses Isagi over his long-time partner Reo to satisfy his own curiosity and ego.

: Isagi enters the first stage, a solo training room where he must score 100 goals in 90 minutes against the "Blue Lock Man," an AI hologram goalkeeper.