Kou Mariya

AKA AMARIYAMariMariya 💒 コウマリヤ

V4Mirai Graduated Last active 6 months ago on Twitter

About

Kou Mariya streams as part of V4Mirai and is presently graduated. Presents as Female. Operates out of United Kingdom and United States. Speaks english. Maintains a presence across Twitch / YouTube / X (Twitter). Twitch Partner-tier broadcaster. Has built an audience of 24.2K followers on Twitter, 23.1K followers on Twitch, 2.9K subscribers on YouTube. Known for asmr, free-talk, gaming, singing content. Often tagged with vampire, twitch-partner, #mariyart, #mariyabai. Has been performing since YouTube: 2020/10/03. Graduated 2025/10/10. Production credits include illustrator by kujouitiso, rigger by RenAtlach, illustration by @kujouitiso. Backstory excerpt: A vampire who accidentally overslept for a few too many thousands of years, Kou Mariya navigates an unknown colorful world full of magic and mystery every single evening. Kou stands at 160 cm (5'3"), character age 6669 years old. Zodiac sign: gemini. Signature mark used by fans: 💒. Their community goes by "KouHai". Goes by AMARIYA / Mari / Mariya 💒 コウマリヤ in different contexts.

Kou Mariya (コウマリヤ) was a female English-language VTuber. Initially debuting as an independent VTuber in 2020, she joined V4Mirai in 2023 as part of its second generation "Petalight", alongside Mono Monet, Yae Yugiri, and Biscotti. In October 2025, she retired following a failure in contract negotiations with V4Mirai. She initially expressed wishes to return as an independent VTuber, but the creator of Kou Mariya ultimately announced that she will be retiring the character and will instead be continuing as Emiliya Fell.

Character Info

Country United Kingdom , United States

Gender Female

Birthday 9 June 1XXX BC

Age 6669 years old

Debut YouTube: 2020/10/03

Height 160 cm (5'3")

Languages English

Zodiac Sign gemini

Illustrator kujouitiso

Rigger RenAtlach

Community

Fan Name KouHai

Genres asmr, free-talk, gaming, singing

Oshi Mark 💒

Hashtags

Fan Art #mariyart

#mariyabai

Recent Activity

Recent Tweets

Loading tweets…

Gallery

Character Sheet

Lore

A vampire who accidentally overslept for a few too many thousands of years, Kou Mariya navigates an unknown colorful world full of magic and mystery every single evening. Otaku to her core, Mariya dreams of creating an idol stage of her very own, one that beckons to fans from every world and realm with her songs!