Learn Japanese for the conversations that matter.
Studying gets you as far as recognising Japanese. Koeki takes you the rest of the way — guided scenarios set in the places you'll actually stand, then open conversation where nothing is scripted and you answer for yourself.
話せる自分に、もっと近づく。
ケンジ · 店員いらっしゃいませ！あ、袋はご利用ですか？
Welcome! Ah, will you be needing a bag?
Your turn · あなたの番
Accept a bag politely, then ask whether there's a large one.
You know the words. The moment still catches you out.
Flashcards make Japanese easy to recognise and hard to produce. Koeki is built the other way round: every phrase arrives inside the situation that needs it, so the recall you practise is the recall you'll need.
Studying Japanese
「温めますか」 — you'd recognise this on a card.
You know the verb. You know the ending. You've seen it a hundred times.
Using Japanese
And you answer it before the queue moves.
Because you've stood in this exact exchange before — five times over, with someone who waits.
Learn in context
文脈で覚える
Vocabulary and grammar show up where they actually live — inside a line someone says to you, with the reason it's phrased that way sitting right underneath it.
Practise real situations
本番のような場面で
Convenience stores, clinics, salons, a friend's living room. Every scene rehearses an exchange you'll genuinely have, in the order it actually happens.
Build speaking confidence
話せるようになる
Every turn asks you to produce Japanese rather than pick it from four options — then shows you what a native speaker would have said, and whether you pitched the politeness right.
Step into the place. Learn the language it asks for.
Each scene is a small room you can walk into. Someone's already talking, the register is right for who's in front of you, and every turn hands you one thing to say — until you can hold that exchange for real.
コンビニ
Convenience Store — Register counter, late afternoon
居酒屋
Izakaya
台本つきの場面は章ごとに開き、会話の相手は進むにつれて増えていきます。
When you're ready, leave the script behind.
Nothing is written down. Your partner answers what you actually said, follows where you take it, and lets the small talk wander the way it does in a real room.
- Say it your way. Write a full reply instead of choosing between four written for you.
- Hear every line. Each turn is spoken aloud at a natural pace, replayable as often as you need.
- Feedback that fits the room. Not just right or wrong — whether the register matched who you were talking to.
あかりさん
店員 · タメ口 · Casual
いらっしゃい！まずは飲み物、どうする？
Welcome! Drinks first — what'll it be?
じゃあ、生ビールをお願いします。
A draft beer, please.
はいよ！今日はブリがおすすめだけど、食べる？
Coming up! The yellowtail's good today — want some?
Nicely pitched. She speaks タメ口 and you answered in ですます — that is the right call at a counter, and 「じゃあ」 picks her question up naturally.
Conversation on the surface. Structure holding it up.
A scene is only worth what it leaves behind. Every phrase you meet is broken down, filed, and handed back at the moment you were about to forget it.
- VocabularyThe words in a line
- GrammarWhy it's shaped that way
- ContextWhere it gets said
- ConversationYou say it out loud
- ReviewJust before you forget
〜ませんか
Inviting someone
A negative question used as an invitation. Asking in the negative leaves the other person room to decline, which is why it lands softer than 「〜ましょう」. JLPT levels are here to order the material — not to be the point of it.
一緒にお昼食べませんか。
Would you like to have lunch together?
Grammar explanations
Plain-English notes on why a sentence is built the way it is, attached to the line that used it.
Contextual examples
Every point carries sentences from scenes you've actually played, not invented textbook filler.
Spaced repetition
Saved phrases and grammar return on a schedule tuned to how well you handled them last time.
Progress, synced
What you've cleared, what's due, and what's getting easier — kept in step across your devices.
A little every day beats a lot once.
Set a goal you'll actually hit, and Koeki keeps the count. Streaks, XP and levels are there to make the habit visible — never to nag you into one.
🔥 Streak
12
days in a row
⭐ Total XP
1,840
+40 today
Level
9
60 XP to Lv. 10
🔖 Saved
21
phrases kept
7 of 24 unlocked
三日坊主じゃない
Practise three days running
0コンビニマスター
Clear every shop scene
おしゃべり
50 unscripted turns
言葉集め
Save 25 phrases
話せる自分に、
もっと近づく。
A little closer, every day, to the version of you who says the thing they meant to say — in the moment, out loud, in Japanese.
Your next conversation starts here.
Pick a place. Meet someone. Keep the conversation alive.