夏へのトンネル、さよならの出口 群青 [Natsu e no Tonneru, Sayonara no Deguchi Gunjo]

In 2020–2021, Shogakukan published the four-issue manga 夏へのトンネル、さよならの出口 群青, an adaptation of the popular light novel about two teenagers who discover a mysterious tunnel that grants wishes at a cost. The series, helmed by its original creators, distills the novel’s poignant blend of sci-fi and coming-of-age drama into a tight, visually striking comic. Its concise run captures the bittersweet tension between youthful longing and the price of altering the past, making it a resonant entry in the publisher’s lineup of literary manga adaptations.