Kairi Okayasu

Often perceived as a charming but unreliable playboy, this easygoing classmate of Momo maintains a carefree attitude despite his questionable reputation. He long harbored a romanticized memory of Momo saving his life during a childhood near-drowning, though he eventually learns a lifeguard was actually his savior. Driven by rumors spread by Sae about a secret romance, he decides to turn the gossip into reality by impulsively kissing her.