Maken-Ki! OVA

A summer training trip to a tropical island should give Takeru Ooyama and his classmates time to relax, but their exercises are interrupted by bizarre creatures that target the girls and drain their Element. Takeru is forced into a real fight while trying to protect everyone, and the strange incident turns the supposedly peaceful camp into another chaotic Maken-filled disaster.

On a different outing, Syria Ootsuka accidentally uses her Inverse ability on Takeru and transforms him into a girl. Stuck as "Takeko," he suddenly gains access to situations that were normally closed to him, until his secret is exposed. Restoring his body proves even more embarrassing when the solution involves receiving a genuinely passionate kiss.