Back to the Jack

Meguru is an ordinary schoolgirl on a school trip, determined to confess her feelings to the boy she likes, Yashiro. After the group stops for a break, she boards the bus again, where a strange man announces that he is hijacking it. When Meguru fights back, the man shoots her. As she fades away, she wishes she could go back in time. Then she wakes up in her own bed and discovers it is the day before the bus hijacking.