Plan with facts
Japan first · then Korea, Thailand & Vietnam

Asia, by the rules.
Not by the stories.

Dates, yen, luggage limits and paperwork — the practical layer of your trip, served as tables, calendars and calculators. We don’t do itineraries. We do the math.

Start with Japan Try the JR Pass math
JapanSouth Korea soonThailand soonVietnam soon
When to Goseasons · crowds
Money & Paymentscash · IC cards
Transport & Luggagepasses · luggage
Staying ConnectedeSIM · wi-fi
Local Ruleslocal rules
Entry & Documentsforms · customs
01

Every figure is sourced

Operator tariffs, weather records, customs schedules and government portals — named on the page, not paraphrased from other blogs.

How we source
02

Every page carries a date

Rules change. You always see when a number was last checked against the official source, so you know what you are trusting.

Browse the guides
03

Wrong? Tell us

Corrections are logged in public with the date and what changed. No quiet edits.

Corrections policy
Six lines, one network

Every rule of the trip, on its own line

Japan is fully mapped first. Pick the line that answers today’s question — each one is tables and numbers, never someone’s holiday diary.

When to GoLine A · Calendar

Month-by-month weather, crowds, prices and the holiday weeks that quietly close the country.

cherry blossom forecast Golden Week Obon
Open the calendar

Money & PaymentsLine B · Yen

How much cash to carry, which ATMs take your card, how Suica actually works, and when tipping is an insult.

IC cards tax-free shopping konbini ATMs
Count the yen

Transport & LuggageLine C · Rails

JR Pass arithmetic, oversized-bag reservations on the Shinkansen, and door-to-door luggage forwarding.

¥50,000 JR Pass break-even · 7 days
JR Pass calculator takkyubin seat rules
Do the math

Staying ConnectedLine D · Data

eSIM, pocket wi-fi or a local SIM — one comparison table, priced per gigabyte, updated per country.

eSIM vs pocket wi-fi coverage maps
Compare plans

Local RulesLine E · Etiquette

Tattoos at the onsen, shoes at the door, garbage sorting, queueing — the written and unwritten codes.

onsen rules temple etiquette
Learn the codes

Entry & DocumentsLine F · Border

Arrival forms, customs allowances and what to do when the official portal rejects your QR code.

arrival cards customs limits
Check the paperwork
Freshly checked

The newest guides

Every guide carries the date its numbers were last verified against the official source.

See every guide

Signature tool

Is the JR Pass worth it? Let’s count.

Add the train legs you are actually planning. The meter compares your ticket total against the 7-day nationwide pass — no opinions, just arithmetic.

Fares are ordinary reserved seats on pass-covered services (Hikari · Sakura · Kagayaki). The base pass does not cover Nozomi or Mizuho.

Network map

One country at a time, done properly

Japan opens the network. Korea, Thailand and Vietnam reuse the same guides, the same tables, the same math.

LIVE

Japan

All six lines open

Calendar, yen, JR Pass math, eSIM tables, etiquette and entry forms — fully mapped.

 NEXT

South Korea

Extension 1 · in survey

T-money, KTX fares and the K-ETA maze — measured with the same rules.

 PLANNED

Thailand

Extension 2 · surveyed

Arrival cards, baht budgets, songthaew logic and Songkran closures.

 PLANNED

Vietnam

Extension 3 · surveyed

E-visas, dong denominations and sleeper-train classes, in plain tables.

Get the tables before the crowds do

One email when a new country line opens or a rule changes. No stories here either — just the updated numbers.

Takes you to the contact form with your address filled in. No spam, no sponsors.