In Japan, your senpai is the person a step ahead of you who quietly makes sure you don't embarrass yourself. Not a teacher. Not a critic. Just someone who already knows where the potholes are, and points them out before you step in one.
That's what this site is.
Why this exists
Japan is having a moment. Record numbers of visitors, and with them a rising quiet friction — in Kyoto's back lanes, on packed trains, at shrines where nobody explained what the fountain is for.
Here's the thing: almost none of that friction comes from bad people. It comes from missing information. Japanese people rarely say the rule out loud, because saying it would itself be rude. So visitors never learn it, and both sides go home a little uncomfortable.
We think that's a solvable problem. Not by asking fewer people to come, but by making sure the ones who do arrive already know the handful of things that matter.
What you'll find here
Practical, specific guides on the situations where travelers actually get stuck: trains and transit, temples and shrines, onsen, restaurants, trash, cash, photography. Every rule comes with the reason behind it, because a rule you understand is one you'll remember.
No lecturing. No guilt. Just the stuff a good senpai would tell you over a beer the night before your trip.