S1·E32 Chapter 32: My Feelings Crystallized

After saving Mei, Rintaro's confidence is restored. However, Master Logos destroys the barrier protecting the Northern Base, leading to the Shindai siblings and the Megids launching simultaneous attacks on it. The remaining Northern Base swordsmen are forced to split up to tackle these situations, with Touma and Yuri fighting the Shindais while Rintaro and Ryo battle the Megids. Taking advantage of the siege, an evolved Zooous intends to settle his rivalry with the former. However, Rintaro gains the Tategami Hyoujuu Senki Wonder Ride Book from the Northern Base's Tome of Omniscience and transforms into his strongest form yet to defeat Zooous once and for all.