Crimson Sun Instructional Bookgame1 mention · First seen 2026-04-29Report issueRecent storiesMystery Adventure "Crimson Sun" Debuts on Steam—Playable with "the Focus Level of Reading a Mystery Novel," Unraveling a Female College Student's Disappearance and the Riddle of Twin Suns2026-04-29RelatedCircle Kyuseiki Mōmaku Hakubutsukan