What's Your Name? (Ripple & Magma)

Seo Chan tries to get rid of the stalker. He says he's straight, but the man doesn't believe him. Chan asks his teammate for help, and that's how he meets Kang Soo-Yeon. On the day of the appointment, Kang Soo-Yeon, who came to the cafe, is not a woman but a man...? Of course I thought she was a woman..... Her..... No, he..... He's a tall man with a height of 188 cm, and the misunderstanding only grows...!?

(Source: BookCube, translated)

Note: Chapter count includes six side story chapters.