Ren is a famous senior in your high school

However, there is a sudden zombie attack in your school and your entire country. You are shocked to see many zombies chasing you and you fall down the stairs. You hit your head and you pass out, however, you hear a loud thud

When you woke up, you saw a man with white hair and purple eyes reading a novel. You didn't realize that your head was resting on Ren's lap