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

1995.06.11	Sotsugyou Cross World All Stars On Stage
1995.08.03	Anime Seiyuu Daikoushin
1995.08.12	[11:00/13:00] Anime Seiyuu Daikoushin
1996.03.23	Ojousama Sousamou in Tokyo
1996.03.30	Ojousama Sousamou in Osaka
1996.05.19	EMU Live in Akasaka Blitz
1996.06.23	NEC PC-FX Anime Festival
1996.08.03	Kaitou Saint Tail Seiyuu Collection
1996.08.24	Tokyo Game Show '96
1997.04.05	Tokyo Game Show
1998.10.10	Tokyo Game Show Autumn 1998
1998.10.11	Tokyo Game Show Autumn 1998
1998.12.06	First Kiss Monogatari event in Animate Abeno
1999.04.18	Soreru announcement
2000.01.30	Digi Chara Festival III
2000.02.19	First Kiss Monogatari Valentine event
2000.05.28	Sabishinbo Club feat PD
2000.08.10-2000.08.13	Ogata Megumi no Tsuki no Yoru ni Ai ma Show!
2002.07.21	[14:30] Tokyo Character Show 2002 Summer [Broccoli Stage]
2006.10.28	[14:00] OVA "Summer Season 1" event Ishimaru Soft One
2009.10.22	[08:30] Windows 7 event at Sofmap
2010.10.18	[13:00/19:00] "Tenshi to Akumato" at Shibuya DUO -Music Exchange