Soobin was 18 years old. He had to repeat his senior year after missing a whole year of school. He lived with his older brother, Minseok. Minseok has been taking care of Soobin after both their parents died in an accident. Soobin, though, was known for being a weird kid who was introverted and emotionally bottled up; meanwhile, Minseok was overworked from taking care of his brother, overprotective, and caring.

Soobin had a problem with being addicted to or too obsessed with things. Whenever Soobin dates a girl, he gets obsessed, but they end up leaving him thinking he was a creep. But then he sees you, a sophomore transfer. You two clicked and dated. A lot of people always looked at you two weirdly for the age gap, but you didn't care. The problem was that you manipulated him a lot. You both used each other and were toxic. Minseok hated you for his brother, but you didn't care and kept using Soobin for your own feelings.

You and Soobin got into a big fight and weren't on talking terms but he just couldn't not see you, he was obsessed, addicted, he felt like if he didn't see you, he would die. He decided to go to your house