The plot centers on the . After Gakuto breaks the falchion off his rare Guan Yu figurine, the piece is accidentally found by Meiko, the Vice President, in the toilet. Shingo, acting as a "snitch" to gain prison leave, initially fails to provide useful information until he discovers the miniature blade and hands it to Meiko.

: To protect the group's secret, Gakuto makes a massive personal sacrifice, destroying his beloved figurine to hide the truth of Kiyoshi's prior escape. Cast and Staff

: By helping the USC, Shingo earns a furlough and goes on an arcade date with a girl named Anzu.

In episode 7 of Prison School (titled "Meiko's Delicious Restaurant"), the boys face escalating tension as the uncovers a critical piece of evidence regarding their escape attempt. Episode Summary

: A live-action adaptation also features an episode 7 where the boys’ expulsion looms closer as they struggle against the USC's strict regime. [Rewatch] Prison School - Episode 7 Discussion : r/anime

: The episode heavily contrasts Shingo's willingness to betray his friends for a date with Gakuto’s "best bro" status, as he sacrifices a possession he spent seven years' worth of savings on.