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

2000 10.15	Kin'you Anime Kan public recording
2001 02.04	Friday Anime Kan Public Recording
2001 02.11	Valentine Party in Kousei Nenkin Kaikan
2001 06.24	Kin'you Anime Kan public recording
2001 11.11	Kin'you Anime Kan public recording
2001 11.18	NEC Interchannel Fan Kansha Day Chotto dake Special 2
2002 09.20	[12:00] Tokyo Game Show 2002 Namco booth Tales of Destiny 2
2002 09.22	[11:00/15:00] Tokyo Game Show 2002 Namco booth Tales of Destiny 2
2006 08.13	[14:00] Comic Market 70 Leaf Aquaplus booth
2006 12.16	Jump Festa 2007 Jump Studio
2006 12.17	Jump Festa 2007 Bandai Namco Booth Main Stage
2006 12.17	Jump Festa 2007 Jump Studio
2006 12.30	[15:30] Comic Market 71 Internet Radio Station
2007 09.09	[14:00] Papiyon Festa
2007 12.02	[17:00] Aquaplus Festa 2007 in Yokohama
2008 11.29	[19:00] Aquaplus Festa 2008
2009 12.19	[16:00] Netstar Girls Talk
2011 10.16	[14:00] Kaitou Tenshi Twin Angel 5th Anniversary event
2013 03.24	[16:00] Lyrical Party V Yokohama Arena
2014 12.06	[15:30] Fantasia Bunko Daikanshasai 2014