[[Seto Kousuke]] is a character from [[Kagerou Project]] and [[Mekakucity Actors]].  He is the second member of the Mekakushi Dan. Seto is the foster brother of [[Kido Tsubomi|Kido]], [[Kano Shuuya|Kano]], and [[Tateyama Ayano|Ayano]] and also [[kozakura marry|Marry]]'s first friend.

h1. Appearance
[b]As a person:[/b] [[black eyes]], [[black hair|black]] [[short hair]], and [[hairclip]].
[b]Default outfit:[/b] [[green hoodie]] ([[hooded jumpsuit]]) with [[goggles]] and [[buckle]] on the hood, [[sleeves rolled up]], [[green jumpsuit]], [[green pants]], [[pants rolled up]], and [[green footwear]].
[b]Childhood outfit:[/b] [[white hoodie]] and [[purple shirt|purple]] [[collared shirt]].

h1. Main songs
* [[children record (vocaloid)|Children Record]] 
* [[shounen brave (vocaloid)|Shounen Brave]] 
* [[summertime record (vocaloid)|Summertime Record]]
瀬戸幸助 セト セトマリ