What is the GRAVITY x Sanrio 'Summer Party' collaboration event?

A limited-time event featuring summer-themed Sanrio character designs and exclusive items.

When is the collaboration gacha available?

From June 17 to June 30, 2026, with multiple gachas rolling out sequentially.

Where can I buy the shop-exclusive items?

Via the 'My Page' or event banner in the 'Voice Room' section of the app.

What are the rewards for the ranking event?

Exclusive profile items like icons, frames, and backgrounds.

Is there a cost to participate in this event?

Some gachas and items require in-app currency, but basic gameplay is free.

GRAVITY, the Easygoing and Friendly Social App, Launches Collaboration Event 'Summer Party' with 'Sanrio Characters'

Published Jun 17, 2026 9:00 PM ・ Updated Jun 17, 2026 1:09 PM ・ 11 min read ・ Source: PR TIMES

HiClub Inc. announces the launch of 'Summer Party,' a limited-time collaboration event between its social app GRAVITY and Sanrio Characters, running from June 17 to June 30, 2026, featuring exclusive gachas, ranking events, and shop-only items.

HiClub Inc. (Headquarters: Minato-ku, Tokyo; CEO: Yuo Furuya) is launching a collaboration event titled 'Summer Party' for its easy-to-use, friendly social networking app 'GRAVITY' (available on iOS and Android), in partnership with Sanrio Co., Ltd.'s beloved characters.

The 'Sanrio Characters' collaboration series has previously received widespread acclaim from users. This time, themed around 'summer,' the event will feature time-limited gachas and ranking events such as 'June Bride,' 'Sparkling Jewel,' and 'Summer Party.'

Exclusive collaboration items will be available, including wedding-themed designs, jewelry-inspired motifs, and newly illustrated sun-kissed versions of the Sanrio characters.

Additionally, for the first time in GRAVITY's collaboration history, 'shop-exclusive items' will be offered for sale.

Campaign Overview

This collaboration will feature limited-time gachas, ranking events, and exclusive items inspired by Sanrio Characters.

First, download 'GRAVITY' on your smartphone.

※ If already downloaded, please update to the latest version.

① Gacha & TWINS Gacha

1) Tap the 'My Page' icon at the bottom of the app

2) Tap the 'Gacha' icon in the center

3) Select the desired title on the Gacha page and spin the gacha

▷ Learn more: https://note.com/note_gravity/n/n2081fdea69d8

② Voice Room Ranking Event

1) Tap 'Voice Room' at the bottom of the app

2) Tap the 'Event Banner' at the top or the 'Calendar' icon in the upper right

3) From the list of ongoing events, select the event you wish to join and tap 'Try Entry'

▷ Learn more: https://note.com/note_gravity/n/ne6c54573bbe8

③ Shop

[Method 1]

1) Tap 'My Page' at the bottom of the app

2) Tap the 'Shop' icon in the middle of My Page

3) Purchase the desired items on the Shop page

[Method 2]

1) Tap 'Voice Room' at the bottom of the app

2) Tap the event banner displayed at the top

3) Purchase the desired items on the Shop page

Collaboration Event Schedule

<Gacha>

【June Bride】

Period: Wednesday, June 17, 2026 – Tuesday, June 30, 2026

A limited-time gacha featuring 'My Melody,' 'Kuromi,' 'Hello Kitty,' and 'Little Twin Stars' with a 'June Bride' theme.

Designed with a romantic and elegant aesthetic inspired by wedding dresses and bouquets.

・10 types of icons ・3 types of frames ・3 types of speech bubbles

【Sparkling Jewel】

Period: Saturday, June 20, 2026 – Tuesday, June 30, 2026

A TWINS Gacha featuring the 'Twins Badge,' usable in GRAVITY's special pair function 'Twinkle Twins.'

'Hello Kitty,' 'My Melody,' and 'Kuromi' appear in dazzling jewel and accessory-themed designs. Enjoy forming 'Twinkle Twins' bonds with your best friends using Sanrio character designs.

・5 types of Twins Badges

・2 types of frames

・2 types of speech bubbles

・3 types of gifts

【Summer Party】

Period: Monday, June 22, 2026 – Tuesday, June 30, 2026

Sun-kissed versions of 'Cinnamoroll,' 'Hello Kitty,' 'My Melody,' 'Kuromi,' and 'Pompompurin' appear alongside summer-themed motifs like inflatable floats and pool rings. Enjoy the vibrant and refreshing world of 'Summer Party.'

Don’t miss the exclusive summer illustrations created uniquely for GRAVITY.

・3 types of frames ・3 types of speech bubbles

【Aurora Ice Cream Shop】

Period: Thursday, June 25, 2026 – Tuesday, June 30, 2026

A ranking event where participants can earn exclusive in-game items.

This edition features 'Pompompurin,' celebrating its 30th anniversary in 2026, and its friends, set in an ice cream shop with sweet, summery motifs.

・1 type of icon

・1 type of profile frame

・1 type of background

<Shop-Exclusive Items>

Sales Period: Around Thursday, June 25, 2026 – Tuesday, June 30, 2026

※ Launch date and time are subject to change.

For the first time in GRAVITY collaboration history, 'shop-exclusive items' will be available.

Special profile items featuring designs of 'Cinnamoroll,' 'My Melody,' 'Pompompurin,' 'Kuromi,' 'Kogimyun,' and 'Hello Kitty' can be purchased directly from the in-app shop.

※ In-app currency is required to use gachas and purchase shop items.

※ For details, please check within the app.

※ Content is subject to change without prior notice.

About 'Sanrio Characters'

Copyright Notice

Official Website

Official Website: https://www.sanrio.co.jp/

Instagram: https://www.instagram.com/sanrio_official_jp

X: https://x.com/sanrio_news

About the SNS App 'GRAVITY'

Over 10 million downloads! (※) 'GRAVITY' is a next-generation social app gaining attention as a platform where users can casually share everyday moments. It features 'Voice Rooms' for voice and chat interaction, 'Hobby Planets' to connect with like-minded communities, and a 'Personality Diagnosis Test' to match with compatible users. GRAVITY is a highly anonymous social app where you can find friends who share your interests and values.

※ As of March 2026, based on company data (combined Android and iOS versions)

・Official Website: https://gravity.place/

・Official X: https://x.com/GravityAD2

iOS Version

Android Version

FACT BOX

Source: PR TIMES
Category: Event
Products / services: GRAVITY / Twinkle Twins

GRAVITY, the Easygoing and Friendly Social App, Launches Collaboration Event 'Summer Party' with 'Sanrio Characters'

⚡ Key Points