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

1998 03.28	Slayers/Lost Universe event
1999 11.28	D.N.Angel Wink 2nd Target Lovesick event
2000 04.01	Tokyo Game Show Spring 2000
2000 07.22	Tokyo Character Show
2000 08.22	Gensou Maden Saiyuuki Summer Illusion 2000
2000 11.19	Tales Ring Eternia public recording
2001 04.07	Gensou Maden Saiyuuki Spring Illusion 2001 in Omiya Sonic City
2001 06.24	Gensou Maden Saiyuuki Summer Illusion on the Movie at Pacifico
2001 07.22	Emotion Festival in Fukuoka
2001 12.01	DVD Scryed event in Tokyo
2001 12.02	DVD Scryed event in Osaka
2002 07.20	[13:00/16:30] Neo Romance Festa 3 in Pacifico Yokohama
2002 07.21	[13:00/16:30] Neo Romance Festa 3 in Pacifico Yokohama
2002 07.27	[14:00] Thanks 20th Emotion Festival 2002 in Suginami Koukaidou
2002 07.28	[14:00] Thanks 20th Emotion Festival 2002 in Osaka
2002 09.01	[13:00/17:00] Omaera no Tamedaro! vol 20
2002 09.15	Gensoumaden Saiyuuki Summer Illusion 2002 Memorial
2002 12.08	[13:30/17:30] Neo Romance Festa 94 in Pacifico Yokohama
2003 01.25	[12:00] Get Backers Every DVD Day in Animate Ikebukuro
2003 01.26	[14:00] Get Backers Every DVD Day in A&H Hall
2003 06.29	[17:30] Neo Romance Festa 5 in Osaka
2003 08.24	[12:00] C3 2003 Gundam Seed talk show
2003 08.24	[14:30] C3 2003 Kadokawa booth signing session
2003 08.24	[16:00] C3 2003 Bandai Visual booth
2003 11.15	[13:30/17:30] Neo Romance Live 2003 Autumn in Pacifico
2004 03.28	[12:30] Tokyo International Anime Fair (Avex booth)
2004 05.01	[14:00/17:30] Neo Romance Festa 6 in Osaka
2004 07.31	[13:00] Tenjou Tenka Round 1 DVD event
2004 08.14	[16:00] Tenjou Tenka event in Nanba Mother Hall
2004 08.17	[19:30] Tenjou Tenka event in Velfarre
2004 08.21	[10:00] Hakusensha 30th Anniversay Sugo Natsu Festa
2004 09.11	[14:00] Gundam Seed Special Edition DVD talk show
2004 09.25	[12:00] Tokyo Game Show 2004 "Konami event"
2004 09.25	[15:00] Tokyo Game Show 2004 Sammy Sega Booth
2004 12.04	[13:30/17:30] Neo Romance Festa 7
2004 12.05	[13:30/17:30] Neo Romance Festa 7
2004 12.12	[13:00/15:00] Harukanaru Jikuu no Nakade 2 Special event
2005 02.05	[13:30/17:30] Neo Romance Live Haruka Matsuri 2005
2005 02.13	[14:00/18:00] Omaera no Tame daro! vol 25
2005 03.27	[14:00] Gundam Seed Destiny DVD&CD talk and live in Nagoya
2005 03.27	[17:00] Newtype 20th Anniversary Kanshasai in Nagoya
2005 12.10	[13:30/17:30] Neo Romance Live 2005 Winter
2005 12.11	[13:30/17:30] Neo Romance Live 2005 Winter
2006 05.07	[14:00] Sony Music Anime Fes 06 Gundam Seed&Destiny Stage
2006 05.07	[18:30] Sony Music Anime Fes 06 stage
2006 08.12	[12:30] Neo Romance Festa movie premium showing
2006 08.12	[18:30] Neo Romance Festa
2006 08.13	[12:30] Neo Romance Festa movie premium showing
2006 08.13	[18:30] Neo Romance Festa
2006 08.27	[13:30] G Festival in Osaka
2006 09.23	[13:30/17:30] Neo Romance Live 2006 Autumn
2007 04.21	[14:00] Heartful Station event in Kobe
2007 07.07	[13:30/18:00] Neo Romance Live 2007 Summer
2007 07.08	[13:30/18:00] Neo Romance Live 2007 Summer
2008 03.01	[13:30/18:00] Neo Romance Festa
2008 03.16	[12:00/18:00] Tennis no Oujisama OVA 100 Song Marathon
2008 04.12	[13:00/14:15] DVD "Ghost Hound" talk show
2008 07.12	[13:00/17:00] Neo Romance Live 2008 Summer Zepp Osaka
2008 12.27	[12:30/17:00] Neo Romance Festa 10
2008 12.28	[12:30/17:00] Neo Romance Festa 10
2009 03.07	[16:00] Heartful Station 900th broadcast public recording
2009 09.06	[18:00] Tennis no Ouji-sama OVA event
2009 12.19	[13:30/18:00] Neo Romance Star Light Christmas
2009 12.19	[13:30/18:00] Neo Romance Starlight Christmas
2010 01.17	[13:00] Neo Romance Festa Haruka 10 Nensai
2010 01.17	[19:00] Neo Romance Festa Haruka 10 Nensai
2010 03.20	[17:00] Sora no Otoshimono Daikanshasai
2010 09.19	[18:00] Sora no Otoshimono Forte Dai Zen'yasai
2010 11.21	[16:00] Heartful Station public recording
2011 01.03	[13:00] Basara 5th Anniversary
2012 03.18	[13:00/18:00] Super Robot Taisen 20th Anniversary Event
2012 05.12	[15:00/18:30] Shining Fan Festa 2012 Spring
2015 09.13	[13:00] Neo Romance Live
2016 05.07	[17:30] Soichiro Hoshi 2nd Live "StarRing Party" Nakano Zero Hall
2016 09.18	[15:45] Tokyo Game Show 2016 "Persona 5" talk show