hentai kuso oyaji
The alleged(?) original writer of a series of scat & gay-themed 2channel copypasta.
The anon who reposted the texts on the 2ch thread claimed that he was a member of a certain gay-themed online bulletin board. His original screenname was 変態糞土方 (Hentai Kuso Dokata).
Although he has no relation with Manatsu no Yo no Inmu, he is sometimes regarded as an Inmu character.