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

1998 10.09	Tokyo Game Show Autumn 1998 [business day]
1999 03.21	Tokyo Game Show Spring 1999
1999 06.27	Digi Chara Festival II
1999 09.25	Kira Kira Melody Gakuen mini live
1999 11.16	YAG Voice Wonderland Deluxe
1999 11.27	Kira Kira Melody Gakuen Bunkasai
1999 11.28	Kong Tong Town radio show
1999 12.21	Totekan Live
1999 12.25	Kong Tong Town radio show
2000 01.29	Kira Kira Melody Gakuen radio broadcast
2000 01.30	Digi Chara Festival III Kira Kira Melody Gakuen stage
2000 02.06	Kira Kira Melody Gakuen Setsubun Live
2000 02.12	Kira Kira Melody Gakuen radio broadcast
2000 04.01	Tokyo Game Show Spring 2000 Kira Kira Melody Gakuen stage
2000 04.02	Tokyo Game Show Spring 2000 Kira Kira Melody Gakuen stage
2000 04.30	Kira Kira Melody Gakuen Ikkisei Live
2000 05.03	Digi Chara Festival in Big Sight
2000 05.04	Digi Chara Festival in Big Sight
2000 05.13	Kira Kira Melody Gakuen first class radio show
2000 05.28	[19:30] Kira Kira Melody Gakuen Ikkisei Live
2000 07.22	Tokyo Character Show Kira Kira Melody Gakuen stage
2000 07.23	Tokyo Character Show Kira Kira Melody Gakuen stage
2000 08.30	Daisuki! event in Yamagiwa Yokohama
2000 09.02	Daisuki! Mini Live in Disk Inn Kichijouji
2000 09.21	Live Pure-ful vol 9
2000 11.12	Kira Melo Bunkasai 2000 Speciore in Amazing Square
2000 11.19	Voice Wonderland 2000
2001 01.31	KONOHANA: True Report Announcement Event
2001 03.25	[18:00] Kira Kira Melody Gakuen All Student Final Live
2001 04.21	Konohana: True Report event in Akihabara
2001 04.22	Konohana: True Report event in Akihabara
2001 08.12	Anime Japan Fes 2001 The Auction
2001 08.17	[16:00] Anime Rave 2001
2001 08.25	TBS Anime Festa
2001 08.26	TBS Anime Festa
2001 10.21	[15:00] Idol 109 part III at M7
2001 10.21	[19:00] Girls Vocal Paradise 3 at M7
2001 10.28	[11:00] Chiccha na Yukitsukai Sugar mini live at Gamers Akihabara
2001 11.03	Doki Doki Happy Tour
2001 11.04	Char Fes 2001 Aki
2001 11.13	Seiyuu Wave in Zamza Asagaya
2001 11.18	One -Kagayaku Kisetsu he- Grateful Live
2001 12.08	Doki Doki Happy Tour in Tokuma Hall
2001 12.25	Chicchana Yukitsukai Sugar event in Akasaka
2001 12.27	Seiyuu Wave in Zamza Asagaya
2002 01.20	[13:00] Seiyuu Wave in Zamza Asagaya
2002 01.26	[12:00] Yomikouteki Goraku Komu Hall event
2002 02.15	2003 Taipei Book Fair
2002 02.15	[17:00] Signing session in Animate [Taiwan]
2002 02.16	Doki Doki Happy Theater 4
2002 02.24	Muryou and Nadesico event in Ishimaru Soft One
2002 03.09	Doki Doki Happy Theater vol 5
2002 03.30	[14:10] Character Entertainment Convention main stage
2002 04.06	[14:00] Doki Doki Happy Theater vol 6
2002 04.28	[16:00] Seiyuu Wave vol 8
2002 05.19	[14:00] hack//EVENT in Kudan Kaikan
2002 05.26	Seiyuu Wave Mystery Bust Tour
2002 06.18	Seiyuu Wave in Zamza Asagaya
2002 08.25	C3 (Cultural Convention of Characters) Gundam World 2002
2002 09.07-2002.09.08	I'm Enterprise Fan Club event
2002 09.22	[12:00] Tokyo Game Show 2002 Atlus Booth
2002 09.22	[15:00] Tokyo Game Show 2002 PCCW Japan booth
2002 11.16	[15:00] .hack//Radio Sumi Sumi Night public recording
2003 01.13	[14:00/18:00] Memories Off Second Concert in Yuuport
2003 03.21	Tokyo International Anime Fair 2003 "Sky Perfect TV Booth"
2003 06.08	Animage & Emotion Label presents Sakidori Emo Theater vol 1
2003 07.20	[13:00] Tokyo Character Show 2003 D.N.Angel Talk Show at Kadokawa
2003 07.21	Tokyo Character Show 2003 main stage
2003 07.27	[16:10] Hobby Expo 2003 Bunka Housou stage
2003 07.27	Hobby Expo 2003 main stage
2003 08.09	[13:00] TBS Anime Festa 2003
2003 08.10	[12:00] TBS Anime Festa 2003
2003 08.24	[15:00] C3 2003 Moe Moe Emotion talk & live
2003 08.30	[13:30] Rondo Robe Circus 2003 in Bunkyou Civic Hall
2003 09.27	[17:00] DVD Popotan vol 1 event in Animate Ikebukuro
2003 09.28	[11:00] DVD Popotan vol 1 event in Animate Nagoya
2003 09.28	[16:30] DVD Popotan vol 1 talk and mini live in TB Hall Osaka
2003 10.11	[14:00] Kichijouji Anime Wonderland 2003
2003 11.08	[14:00] "Nostalgia" CD event in Asobit City
2003 11.08	[17:00] "Nostalgia" CD event in Ishimaru Soft One
2003 11.09	[12:00] "Nostalgia" CD event in Yamagiwa Soft
2003 11.09	[15:00] "Nostalgia" CD event in Gamers Akihabara
2003 11.29	[11:00] DVD Ikkitousen vol 1 event in Yamagiwa Soft
2003 11.29	[14:00] DVD Ikkitousen vol 1 event in Asobit City hall A
2003 11.29	[16:30] DVD Ikkitousen vol 1 event in Animate Shibuya
2003 11.30	[12:00] DVD Ikkitousen vol 1 talk and live in Ishimaru Pascon Tower
2003 11.30	[15:00] DVD Ikkitousen vol 1 event in Comic Toranoana
2004 03.28	[12:00] Tokyo International Anime Fair (main stage)
2004 04.11	[13:00] Shibuya O-Crest Animation on My Mind! 2nd Movement
2004 07.04	[16:00] DVD "Bouyaku no Senritsu vol 1" event
2004 08.07	[14:00] Yumeria Yumekibun R-side public recording
2004 09.20	[14:00] Nagareboshi Sentai Musumet event
2005 01.30	[13:00] DVDBOX Utakata Summer Memory Box talk event
2005 02.13	[13:00] Charappa vol 22 CD event in Gamers
2005 03.27	[15:00] Korega Watashi no Goshujinsama event in Yakult Hall
2005 04.29	[15:00] Doki Doki Happy Maid Theater
2005 10.29	[14:40] Aice5 event (Akihabara Enta Matsuri)
2006 03.11	[17:00] Starchild Dream in Kobe 3rd
2006 05.28	[17:00] StaCha Mania Zen'in Shuugou at Zepp Tokyo
2006 07.29	[14:30] Solty Radio public recording
2006 08.05	[09:00] Opening event [Aice5] Toranoana Akihabara
2006 08.20	[15:00] We Believe Your Love [Aice5]
2006 09.23	[12:30] Tokyo Game Show 2006 Bandai Namco booth
2006 11.04	[21:00] Anispa! live public recording
2006 11.12	[14:00] Oto Boku Special Event in Club Citta
2007 05.06	[18:00] Aice5 1st Tour 2007 "Love Aice5"
2007 08.25	[21:00] Anisupa! public live broadcast
2007 09.20	[18:00] Last Aice5 at Yokohama Arena
2007 09.22	[13:00] DVD "Doujin Work" talk show YAG Akiba
2007 09.22	[16:00] DVD "Doujin Work" talk show Toranoana Akihabara
2008 03.30	[16:00] Tokyo Anime Fair 2008 Media Factory booth
2008 11.01	[13:30] The Voice Star event Hitotsubashi Daigaku
2008 11.02	[13:00] Seiyuusai in Meidaisai
2009 03.01	[17:30] Hayate no Gotoku! Live 2009 Hina Matsuri Matsuri
2009 06.21	[18:00] Reading For The Ties 2009
2009 12.26	[21:00] Radio Ani Spa! public recording
2010 01.23	[09:30/13:00] Mahou Shoujo Lyrical Nanoha The Movie 1st Shinjuku Milano
2010 05.09	[14:00/18:00] .hack/live
2010 06.26	[13:00] Ikkitousen Xtreme Xecutor talk show Akihabara Gamers
2010 06.26	[16:00] Ikkitousen Xtreme Xecutor talk show Toranoana Akihabara
2010 09.18	[13:10] Tokyo Game Show 2010 SEGA
2010 09.19	[14:10] Tokyo Game Show 2010 SEGA
2010 10.31	[13:00] "Asano Hirohashi no Ganbare Sakaguchi-kun" at Hosei Daigaku
2010 11.23	[17:00] Lyrical Party IV
2011 09.25	[16:00] A&G All Star 2011 in CC Lemon Hall
2011 11.05	[15:00] Hosei Daigaku Horie Yui Asano Masumi talk event
2012 12.22	[14:00] Jump Festa 2013 Koei Techmo Special Stage