Based solely on the provided description, Arisu Ijuuin appears as an idol performer in the OVA, participating in a studio performance with Rina Yuuki and Chisato Miura. After her performance, she flirts with Hiroshi Houjou and hugs him. This interaction occurs against the backdrop of her mother’s prior attempt to marry Ken Houjou, which would have made Hiroshi her stepbrother. Rina Yuuki suspects Arisu Ijuuin of orchestrating an exploding bouquet prank intended for Hiroshi, though Arisu denies involvement when confronted.