JK Tantei ~Satsujin Loop Kara no Dasshutsu~

――But who is the culprit? At prom, you follow your best friend Melinda to a storage house where a secret party is planned to take place. However, as you arrive at the venue you are met with a huge explosion. When you wake up, you realize that you have gone back in time by a month. "Unless you find out who's behind all this, you cannot prevent the explosion at prom."