Otona-tachi ni wa Zutto Naisho Daze

Kokoro lives her school life by the motto of "living righteously." To relieve stress, she shouts in an empty lot, only to be spotted by Luca, the leader at the neighboring delinquent school!

With her secret now known, Kokoro finds herself spending more time with Luca, despite being constantly dragged into his antics...!? The most fun things are the things you can't tell your parents or teachers: a dangerous and reckless love story of youth that will definitely be reminisced as their dark past.