Karaoke and in-room music on Hayuki
Hayuki is listed on Google Play as Hayuki - Group Voice Chat by HayoParty, package com.hayoparty.chat. The store text says you do not need to show your face, and you can play your music in the room, sing karaoke, and host events in group chat.
The ID top-up currency is Coins. TopKuin credits them with the UID from the Me tab, not by taking the account.
Copy UID from the Me tab
Open Hayuki and tap Profile or Me, usually bottom-right. The number sits under the avatar and nickname. Copy it fully and paste it on TopKuin with no spaces.
Skip the display name if it is not the digits. With two accounts, copy from the one whose room you will use. Paste instead of typing.
Theme skins are not a different SKU
Recent Hayuki notes mention new client theme skins and extra dress types. That is in-app appearance. External top-up is still Coins to the Me UID. Do not mix Hayuki with another karaoke app that uses a different identifier.
This page is written for Hayuki’s karaoke-plus-music path, not a swapped chat template.
Buy Hayuki Coins on TopKuin
Pick a Coins pack on this Hayuki page, paste the UID, check the live price, then pay. After acceptance, credit routes to that ID. We do not invent delivery rates. Anyone asking for a Hayuki password or OTP is not this flow. Keep the TopKuin order number.
After payment in Hayuki
Refresh Coins inside Hayuki after confirmation. If late, match the order UID to Me, then write TopKuin support with the order number only. Device bans or client crashes belong with Hayuki support; TopKuin tracks digital delivery to the pasted ID.