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YouTube subscribers 2.9K

Twitch follower goal 23,362 / 25,000

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Kou Mariya

AKA AMARIYAMariMariya 💒 コウマリヤ

V4Mirai (former) Graduated Last active 4 weeks ago on Twitch

About

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.

Bio (from YouTube)

Moved to @kou_mariya This is my indie account, but I'm now with V4Mirai !! Making content on that channel instead of here now~!

Bio (from Twitter)

kohu! vampire idol of #petalight 🌸 yt (80k) & twitch partner — producer at @frproductions gen: #V4MPIRE • fanart: #mariyart • ママ: @kujouitiso Work: DM

Bio (from Twitch)

business→ contact@mariya.moe

Character Info

Country United States

Gender Female

Birthday 9 June 1XXX BC

Age 6669 years old

Debut YouTube: 2020/10/03

Height 160 cm (5'3")

Weight ....

Languages English

Zodiac Sign gemini

Illustrator kujouitiso

Rigger RenAtlach

Community

Streaming Language English

Speaks English

Fan Name KouHai

Genres asmr, free-talk, gaming, singing

Oshi Mark 💒

Hashtags

Fan Art #mariyart

NSFW #mariyabai

Twitch Schedule

Recent Broadcasts

Watching Vtuber Concert with @starlightdaryl (Co-Producer Watchalong/React)

Fri, Jun 12, 12:49 AM UTC

2h56m39s 1.3K views

watching vtuber concert with @starlightdaryl

Fri, Jun 12, 12:47 AM UTC

1m47s 70 views

Un-Graduation!?

Tue, Jun 9, 10:11 PM UTC

9h25m21s 4.9K views

Recent Activity

Recent Tweets

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Gallery

HoloList Portrait

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!

Contributors

This profile is enriched by VTuber Wiki community editors. Thank you to:

Credits sourced from VTuber Wiki page revision history. Vtubie and Hololist do not expose per-page contributor data, so this list reflects VTWiki editors only.