After a shocking discovery, Asahi Kuromine finds out that his crush, Youko Shiragami, is a vampire. To safeguard her family, Youko must leave school, but Asahi vows to protect her secret. Despite his best efforts, Asahi's transparent nature makes it tough to keep quiet. As more supernatural beings cross his path, he must safeguard their identities to avert disaster. Follow Asahi in Jitsu wa Watashi wa as he grapples with newfound friends, the trials they bring, his struggle to keep mum, and his quest to capture Youko's affection.