Some of the events that Mariko has appeared in are as follows.

2019.10.27	[] The Idolmaster Shiny Colors 283 Production Producer Kanshasai
2023.02.11	[17:00] The Idolmaster Masters of Idol World 2023
2023.03.18	[16:00] The Idolmaster Shiny Colors 5th Live Day 1
2023.03.19	[17:00] The Idolmaster Shiny Colors 5th Live Day 2
2023.12.10	[] Ijigen Fes Idolmaster Love Live Utagassen Day 2
2025.10.25	[17:00] The Idolmaster Shiny Colors 7th Live Tour Rasen -Halo Around-
2025.10.26	[17:00] The Idolmaster Shiny Colors 7th Live Tour Rasen -Halo Around-
2026.02.14	[16:30] The Idolmaster Shiny Color Daikanshasai! -283 Sports Festival-
2026.02.15	[16:30] The Idolmaster Shiny Color Daikanshasai! -283 Sports Festival-