Start with a Weak Chicken

I'm dead... But he was resurrected in a high school student, and he was still a weakling who was bullied by girls every day? ! Who was I in my last life? How did he die? How should I break the situation in this life? Is this life the same world as the previous one? Even if it is, how can a weakling investigate a murder case? … Thinking of this gives me a splitting headache... Forget it, let's go to school first! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.