This Psychopath is Hitting on Me! 1

"You're stalking her, aren't you?" Lovestruck Akira just can't stop following around a certain senpai, his one-sided crush. He's beside himself with excitment when she invites him over...only to find her younger twin brother Shinya waiting for him inside! Things get heated when Shinya starts interrogating him, accusing Akira of stalking, and then...pinning him down to french him?! Since then, Akira himself becomes the target of passionate and persistent stalking by Shinya...!