From May 2nd to May 17th, 2026, the M.S.S Project, a game streaming and music production unit, will host an exhibition and pop-up store titled Great MSSP Exhibition 〜EPISODE Ⅳ: Prologue〜 at Shinjuku Marui Main Building. Experience immersive displays that showcase a chaotic worldview, limited edition merchandise sales, and photo spots — all exclusive content available only at this event.