Some of the events that Mieko has appeared in during the year 1999 are as follows.

1999.03.21	Tokyo Game Show Spring 1999
1999.06.27	Digi Chara Festival II
1999.08.14	Kira Kira Melody Gakuen Manatsu no Eekoe
1999.09.18	Tokyo Game Show 99 Autumn
1999.09.19	Tokyo Game Show 99 Autumn
1999.09.25	Kira Kira Melody Gakuen mini live
1999.10.16	Cospa 5th Anniversary in Velle Farre
1999.10.30	Kira Kira Melody Gakuen Halloween Live
1999.11.06	Tokyo Denki University Nishiki Festival
1999.11.10	Idol Chui at Take Off 7
1999.11.14	Kong Tong Town radio show
1999.11.27	Kira Kira Melody Gakuen Bunkasai
1999.12.18	Kong Tong Town radio show
1999.12.19	Heart Chu signing session at Toranoana Ikebukuro
1999.12.25	Kira Kira Melody Gakuen Christmas Live [fanclub only]
1999.12.26	Kong Tong Town Sayonara Festival
1999.12.27	Anime Kouhaku Utagassen
1999.12.27	Anime Kouhaku Utagassen Uchiage Daihousou Party