Some of the events that Masumi has appeared in during the year 2004 are as follows.

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