SSSS.GRIDMAN (Series) favorite_border

[DeepL Translation - needs review] Volume 1: [Digital edition only! Includes complete color pages from "Shonen Jump +"! One day, Yuta Hibiki, a first-year high school student living in Tsutsujidai, wakes up and finds he has amnesia. While confused and unable to remember who he is, Yuta meets a being who calls himself "Hyper Agent Gridman" through the screen of an old computer!　He talks to Yuta and asks him to remember his mission.

(Translator: DeepL)