I Turned My Childhood Friend Into a Yandere After She Asked Me for Love Advice

Yuuri Ogawa, the protagonist with zero romantic experience, receives love advice requests from his childhood friend, Airi Shiraishi. In order to fully respond to her requests, Yuuri decides to turn his childhood friend into a yandere. A few days later, the things Yuuri taught Airi start happening to him. Yuuri misunderstands and thinks he was just practice for Airi’s rehearsals, but…