New York's friendly neighborhood Spider-Man arrives in the Japanese city of Ohakama. Yu, a shy boy who likes drawing manga, is attacked by a villain out of nowhere; Spidey shows up and seems to settle things, until the villain throws a molecular disassembly bomb and the two of them are fused into one body. That is the starting point as Shueisha describes volume 1.
The magazine is Shueisha's Saikyo Jump, a monthly aimed at younger readers than Weekly Shonen Jump, so a Marvel hero ended up as a serial in a magazine for primary schoolers. A one-shot ran first in the September 2022 issue, the serial began with the November 2023 issue on sale 4 October, and it finished in the July 2025 issue. It is also available on Shueisha's Shonen Jump+ app.
Setta Kobayashi writes and Hachi Mizuno draws. Kobayashi previously did an official Black Clover spinoff gag manga, and Mizuno took part in the 2019 collaboration between Marvel and Shueisha that produced a set of manga short stories.
Japan finished at four volumes. The blurb for volume 4, released on 4 September 2025, has a syndicate scheming over villain badges, the Green Goblin surfacing, and Spider-Man Kizuna joining forces with the Kizuna Kids for the last battle; Shueisha marked it as the end of the story.
VIZ Media started the English edition in July 2025, and volume 4, released on 8 September, is labeled the final volume: 168 pages, rated All Ages. No Korean edition was found.
