Natsuyama Yotsugi

==Producer categories==
==Affliations==
*Shiritsu Vocalo-P Gakuen Shotoubu
==External Links==
* Twitter: @seckarium
* mora: 
===Media===
* NND Account
* NND MyList
* Piapro
* YouTube Channel
* Spotify
===Unofficial===
Natsuyama Yotsugi (夏山よつぎ, セッカ*, secka*) is a vocal synth producer who first began uploading Vocaloid music in March 2020. 
==Works==
==Discography==
__NOTOC__
Category:Producers
Category:Composers
Category:Lyricists
Category:Japanese original producers
Category:Producers using VOCALOID
Category:Producers using CeVIO
Category:Producers using UTAU
Category:Producers using Synthesizer V