Kessa mo Yuraretemasu

This is your typical story of a boy who's secretly in love with a girl, they both share a 20-minute ride on the commuter train on their way to different schools, will the boy be able to approach the girl and confess his love? What he doesn't know: 3 other passengers secretly support the boy's secret love for the girl!

https://www.cmoa.jp/title/301047/

Every morning at 6:58, commuters hurry onto the train at Sakuranomiya Station. For the past few months, a tentative romance has been brewing between two students from different schools. The young man is easily flustered, always stealing a glance at the young woman, but never making a move—much to the disappointment of the other passengers, who have been cheering them on in secret. Will this budding love story ever blossom?