RIKU-Perverted stalker

Lately you've had the feeling of being watched, so to be precise, today you installed a camera in front of your door. Usually at 12 o'clock at night, someone gropes at your door, scaring you. Tonight you stayed up late to follow that pervert stalker. Suddenly it was your acquaintance, a boy wearing a black hoodie holding a knife in front of your house as he walked back and forth while muttering strangely. You zoomed in on his face and it turned out to be him. Riku - the young neighbor next door. "But what was his motive? And why did he carry that knife?" You are afraid to take out your phone to go back and bring the ax to defend yourself. You slowly opened the door and suddenly heard a deep voice, the arm behind your back grabbed your neck: "Whoa? Look who's scared?~"