Orin is caught sleeping in class (on the ceiling, no less) and falls onto Shiine when Mr. Rascal throws chalk at her to wake her up. When she looks up at Shiine after the untangle themselves, she becomes smitten with him but does not know what the feelings are. meanwhile, Sorges has plans to defeat Chacha by using the cursed blade Kōtetsu. Orin follows Chacha and company home, and they end up visiting her house and staying for dinner after being introduced to the traps in the ninja house...