Seitsuki Ichikawa, a high schooler fascinated by isekai manga, faces a reality-defying experience after encountering a mysterious girl and a deadly accident. "And another isekai protag coming fresh from truck-kun" is what Seitsuki thought after reading another comic. Until... He went out to buy a book from the nearest bookstore. But when crossing the road, he let his guards down. And, the sight of truck-kun at last moments… Then…