A Yakyuken game featuring all the heroines from "School Days," "Cross Days," and "Shiny Days," originating from an April Fool's Day project.
- Genre: Visual novel
- Platform: Windows
- Website: stacksoft.sakura.ne.jp/sbd/sbdays.html
A Yakyuken game featuring all the heroines from "School Days," "Cross Days," and "Shiny Days," originating from an April Fool's Day project.