Works

東京23区の公園で手持ち花火をしてよいか、日時と公式情報から確認するガイド。

Explore eight ways of relating through 32 questions, then compare profiles without a compatibility score. Basic results are free; detailed reports are optional purchases. The app is in Japanese.

Answer 20 questions about what bothers you and what you actually do. Find the overlap across ten everyday themes in this two-minute game. The game is in Japanese.

Choose replies to ten messages and try to survive without stepping on a conversational mine.

Answer 15 invitations to see how the person, timing, plan, energy and distance change your yes-rate.

Choose replies for six kinds of relationships and see how your sense of distance changes from person to person.

Ten questions trace how your excitement changes from the day you make plans to the moment you arrive.

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.

Work out, log it, and somehow your cat gets ripped too. A workout log × growth game.

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.