The Poppo Event, also known as the Poppo Intensifies Event, is a late summer/early autumn exclusive seasonal event in 100% Orange Juice! It was the first seasonal event introduced, and the first to include seasonal items that could only be obtained during the event. The event features a greatly increased amount of within the game, as well as exclusive cosmetics for Marie Poppo.
Unlike other events, the Poppo Event is treated much more secretly. It is rarely announced explicitly, with accompanying changelogs usually saying only something akin to "Poppo intensifies". The event also lacks an event banner, leaving the Poppo on the main menu as one of the only indicators of the event's presence. The event was officially introduced with the release of Version 1.6.6 in 2014, with no mention of it in the changelog at all.