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

1999.11.21	Kong Tong Town radio show
1999.11.27	Kira Kira Melody Gakuen Bunkasai
1999.12.18	Kong Tong Town radio show
2000.01.08	Kira Kira Melody Gakuen Oshougatsu Live
2000.01.29	Kira Kira Melody Gakuen radio broadcast
2000.01.30	Digi Chara Festival III Kira Kira Melody Gakuen stage
2000.02.12	Kira Kira Melody Gakuen radio broadcast
2000.03.31	Tokyo Game Show Spring 2000 [business day]
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
2000.05.28	[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