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Discipline: Record of a Crusade is a Japanese hentai interactive fiction computer game made by the video game development company ActiveSoft. It was later adapted into a six-part direct to video animation series Discipline - The Hentai Academy.

A world controlled by a sinister brotherhood who hide their fangs behind masks of humanity, known as the Chronos Corporation. While investigating a mysterious explosion near his school, Sho Fukamachi happens upon the Chronos Corporation's Greatest weapon: a techno organic suit of bio armor known as "the Guyver.

This OVA served as the pilot for the TV series and came bundled with the special edition of manga "Kodomo no Jikan" Vol.4.

Hentai title that deals with a young man named Yusuke that tutors a young woman named Reina and ends up sleeping with both her and her mother. Threesomes ensue.