Twitter followers 4.5K

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Twitch followers 5

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Kumu Cotton

1 year strong

AKA kumumuthe Cottou girlearlick cunny

HeartSync Active Last active 2 months ago on Twitter

About

Kumu Cotton, formerly known as LOCKET, is a matchmaking cupid and cosplayer who debuted in late 2025 as part of HeartSync's first generation. Her English streams blend ASMR, singing, and vlogging, featuring a character designed by Hane Iro for her fanbase, the Cupii's.

Kumu Cotton (コットンくむ) is a female English speaking VTuber associated with HeartSync. She debuted under it's first generation going under the name "LOCKET" who debuted in late 2025 along side Siena Olena and Miki Kokoa. She is a matchmaking cupid and cosplayer.

Bios from their socials (1)

Bio (from Twitter)

Belongs To HeartSync🩷 (@HeartSyncLive) ┊ ᴍᴏᴍ: @hane_iro_ ┊ Your Cosplaying Angel ♡ ┊ ᴀʟʟ: #KumuCotton ┊ ꜰᴍ: 🍑🎀 ┊ ꜰᴀ: #IlluKumu

Character Info

Gender Female

Birthday 20 May

Age 19.1 years old

Debut 2025/22/11

Height 155 cm (5')

Weight ....

Blood Type AB+

Languages English

Zodiac Sign taurus

Community

Speaks English

Fan Name Cupii's

Genres asmr, cosplaying, singing, vlogging

Oshi Mark / Emoji 🍑🎀

Hashtags

General #KumuCotton

Live #CupiiSight

Fan Art #IlluKumu

Fan Art (NSFW) #KumuEcchi

Recent Activity

Recent Tweets

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Gallery

Full Body

Reference Sheet

Key Visual

HoloList Portrait

Appearance

She has long pink hair with two small pigtails pointing out, she has white streaks throughout her hair and the tips fade to a light blue. Her irises are a muted orange with a small blue-gray dot.

Background

Kumu's YouTube channel was created on 11 August 2024, while her Twitter account was registered in March 2024. She debuted on 22 November 2025.

Mascot and fans

Her fans are known as Cupiis.

Lore

A silly matchmaker with a knack for finding herself in troublesome situations. It’s amazing how she can be so mean, yet endearing.

Contributors

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

Taon ×3 BeardWizard ×2 Seeeeew ×2 Pekopekokonpeko ×2 MyPastel31 ×1 FunnyRabbit734 ×1 Ninamarie12 ×1 RogueModron ×1

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.