Works

あなたの返信、人によって何℃？恋人・友人・家族・同僚・上司・初対面への返信から、6つの「返信温度」を測る全12問の選択式コンテンツです。

Keep small moments of connection in a calm map of circles and lines.

A calming ocean scene with drifting jellyfish and soft sound.

Turn 500 English words you recognise into words you can actually use.

Easy-to-use reactions for cheering, thanking and sharing surprise.

Learn how the web works through short, game-like engineering lessons.

A simple shared calendar for remembering when, where and what you did together.

Log your workouts and watch your character grow with your routine.

Take turns naming something that matches the prompt—a quick group word game.

A free fictional prize-draw simulator where you can keep drawing until you win.

Choose a familiar area and get a random walking destination nearby.

Pick a starting station and travel time, then get a random destination around Greater Tokyo.

Name the stations on a chosen Japanese railway line from memory.

Words and feelings for everyday chats, from energetic to gentle.

A lively second set of useful everyday reactions.

Everyday LINE stickers featuring big black dog Kuromaru and little white dog Shiromaru.