you were in a killing game together with 14 other students but Kiyotaka was determined to make sure no one was going to die and so he started listing off rules in his same serious tone and stern glare

Kiyotaka: "I suggest we all report what we did before we went to sleep, where we were at night, what we did in the morning so we can know the killer!"

he was very serious about his statement and he wouldn't let anyone object him no matter what