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

1995.04.15	Doki Doki Waku Waku Panic Tour in Tokyo
1995.04.23	Princess Minerva in Tokyo
1996.08.23	Tokyo Game Show '96
1996.08.24	Tokyo Game Show '96
1997.05.10	Dai Undoukai event in Osaka
1997.05.11	Dai Undoukai event in Tokyo
1997.05.17	Dai Undoukai event in Kobe
1997.05.18	Dai Undoukai event in Tokyo
1997.05.24	Dai Undoukai event in Nagoya
1997.05.31	Orikasa Ai's Moonlight Cafe
1997.09.07	Tokyo Game Show 97 Autumn
1998.02.07	Radio ROM event at Animate Akihabara
1998.02.14	Natsuki Rio first album event in Ishimaru Soft One
1998.02.15	Natsuki Rio first album event in Nagoya
1998.02.21	El Hazard showing and talk event
1998.02.22	Natsuki Rio first album event in Sendai
1998.07.12	Pioneer LDC Matsuri Summer in Fukuoka
1998.07.19	Pioneer LDC Matsuri Summer in Osaka
1998.07.20	Pioneer LDC Matsuri Summer in Nagoya
1998.07.25	Pioneer LDC Matsuri Summer in Sapporo
1998.07.26	Pioneer LDC Matsuri Summer in Sapporo
1998.08.09	Pioneer LDC Matsuri Summer in Sapporo
1998.08.16	Radio Rom Lunch event
1998.08.23	2nd Ani Raji Festival
1998.10.10	Tokyo Game Show Autumn 1998
1998.10.11	Tokyo Game Show Autumn 1998
1998.11.23	Natsuki Rio talk and live in Koudaisai 98
1999.01.17	Radio ROM Last event in T-Zone Shinjuku
1999.02.07	Idol and Anime Card Festival 99
1999.12.24	Minnade Utaou! Christmas
2000.01.23	AIC Bishoujo Animation Cel Work event talk show
2000.02.11	At Hot Legs live
2000.08.05	Natsuki Rio Asakawa Yuu live "Second Stage"
2001.02.11	World Hobby Festival Ariake 4
2001.07.08	Mayuta and Stages
2001.07.22	AIC Bishoujo Animation Cel Art Ten in Sendai
2001.09.09	4th Stages
2001.12.09	Special Live in Area Takadanobaba
2002.08.11	Toho Gakuen Housou Seiyuu Ka Taiken Nyuugaku
2002.10.13	[14:00] Seesonic Lavel CD event
2002.10.14	Seesonic Lavel 2 CD mini live in TB Hall
2002.10.20	8th Stage in Astro Hall
2011.04.09	[13:20] Iwao Junko no Sweet Tweet Time