The Girl I Saved on the Train Turned Out to Be My Childhood Friend Novel Volume 6 was written by Kennoji with illustrations by Fly.

As summer break comes to an end, Ryou puts the final touches on his short film starring Hina and prepares to submit it to the competition. Between filming and the fireworks festival, the break has brought Hina and Ryou closer than ever. Even so, Ai and Shizuka refuse to give up on love. With class back in session, Hina's rivals fight to make their feelings known. And Hina isn't about to throw in the towel, either—on love or on her dream…