Prison School manga volume 3 features story and art by Akira Hiramoto.

The Shadow Student Council, determined to drive its prisoners (the boys) out of the academy, gets its Expel the Boys Operation (E.B.O.) underway! But the boys have internal turmoil to deal with too. Shingo's still picking on Kiyoshi, and Gackt's Guan Yu figure suddenly finds itself in the direst of straits! The E.B.O. is relentless, however, and the longer it continues, the more Kiyoshi and the others find their friendships, bonds, and hearts being destroyed...Is expulsion really the only way out?