Who are the companies that announced the launch of the LINE Mini App "Shiromaru no Oheya"?

GREE X, Inc. and UNCHAIN Inc. announced the launch of this application on the LINE platform.

What kind of game is the LINE Mini App "Shiromaru no Oheya" designed for users?

It is a casual nurturing game where players can communicate with and take care of Shiromaru.

When was the LINE Mini App "Shiromaru no Oheya" officially launched on the platform?

The game was officially launched on the platform starting from Thursday, April 9, 2026.

What will happen to the character Shiromaru if it is left alone for a long time?

Shiromaru will get hungry and can get in a bad mood if players leave it alone for a long time.

What are the key playing features of this newly launched casual nurturing game?

It requires no initial download and does not demand excessive playtime or in-app purchases.

Launch of LINE Mini App 'Shiromaru no Oheya' Featuring the Massively Popular Character

Published Apr 10, 2026 3:00 AM ・ Updated Jun 18, 2026 10:43 AM ・ 3 min read ・ Source: PR TIMES

GREE X and UNCHAIN have launched 'Shiromaru no Oheya', a casual nurturing game based on the popular LINE stamp character 'Shiromaru'. The game is available as a LINE Mini App, requiring no downloads and designed to be played easily in spare time.

GREE X, Inc. (Headquarters: Minato-ku, Tokyo, President and CEO: Kazuhisa Adachi, a wholly-owned subsidiary of GREE Holding, Inc., hereinafter "GREE X") and UNCHAIN Inc. (Headquarters: Shibuya-ku, Tokyo, CEO: Win Lei) announced that starting Thursday, April 9, 2026, they have launched the LINE Mini App "Shiromaru no Oheya" (Shiromaru's Room) on the "LINE" platform provided by LY Corporation, featuring the hugely popular LINE stamp character "Shiromaru".

What is "Shiromaru no Oheya"

Popular LINE stamp character becomes a game "Shiromaru no Oheya" is a nurturing game where you communicate with and take care of "Shiromaru," a character everyone has seen at least once. Recently, there is a high demand for casual games that can be enjoyed on smartphones, and a growing need for "easily enjoyable" content during spare time such as commuting. Considering this background, the game is designed to be played casually, requiring no initial download, and is a gentle game that does not demand excessive playtime or in-app purchases.

Easy care in spare time Shiromaru gets hungry and can get in a bad mood if left alone for a long time. Let's become better friends through communication via "conversations" (kaiwa) and "meals" (gohan).

Rich customization and collection features

FACT BOX

Source: PR TIMES
Category: New Product

Launch of LINE Mini App 'Shiromaru no Oheya' Featuring the Massively Popular Character

⚡ Key Points

What is "Shiromaru no Oheya"

Easy care in spare time Shiromaru gets hungry and can get in a bad mood if left alone for a long time. Let's become better friends through communication via "conversations" (kaiwa) and "meals" (gohan).

Rich customization and collection features

FACT BOX

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