Genkai Tokki: Castle Panzers

In a certain country, there was a coup d’etat. The princess, who barely managed to escape, meets the protagonist when he appears before her. However, in protecting the princess’ party, the protagonist is surrounded by enemies and falls into a dilemma. Then, he hears a mysterious voice. “Do you want… power?” The protagonist has no choice but to respond. Upon doing so, a mysterious castle somehow emerges from the ground. Its power overwhelms and repels the enemy. Then, the mysterious creature Otton appears. “You have formed a contract with the castle. In exchange for using the power of the castle, you must continue to sacrifice your libido! The libido, that is, is a holy triangle that relies on young and innocent girls!” For some reason, it seems that he has to collect underwear. Furthermore, the princess’ party proposes the idea of taking back the country. “If you read the ancient texts in the castle, you’ll...