Blood Type Personality Japanese Ketsueki-gata · A · B · O · AB
Pairing · Steady

Type B × Type BBlood type compatibility

Type B — The Free Spirit

Two free spirits and no adult in the room. Enormously fun, structurally unsound.

For entertainment only. Blood type compatibility (ketsueki-gata aishō) is a popular Japanese cultural belief and is not supported by science. Please don’t use it to make real relationship decisions.

What two Type Bs recognise in each other

Each finds the other unusually easy — no hints to decode, no invisible rules, no offence taken at a week of silence. Both are used to being the eccentric one and neither has to perform it here. The recognition is immediate and mutual: finally, someone who doesn't want to be managed either.

What works

Total honesty and zero passive aggression. Whatever's wrong gets said within the hour, usually badly, and then it's finished. Neither keeps score. Neither expects the other to guess. Life together is genuinely interesting — a run of new places, new obsessions, and conversations that go somewhere strange.

Where it breaks

The dishes. The renewal. The person who was going to book it. Both types happily assume someone else is holding the boring end, and here nobody is. Projects start beautifully and stop at 70%. Neither one is being careless at the other — they're being careless in parallel, which is somehow worse.

By situation

One thing that helps

Write down who owns each recurring chore. Not a conversation — a list. Then look at it.

Every pairing

All ten combinations of A, B, O and AB — each page covers both points of view.

Prefer the grid? See the full 4×4 compatibility chart.

Frequently Asked Questions

Are two Type B people compatible?

In the Japanese blood type (ketsueki-gata) tradition this pairing is usually rated “Steady”. Fun but scattered — neither wants to be the responsible one. This is folklore from Japanese pop culture, not a scientific finding — there is no evidence that ABO blood type predicts relationship outcomes.

Is Japanese blood type compatibility scientifically real?

No. Blood type compatibility (ketsueki-gata aishō) is a popular belief in Japan, comparable to horoscopes elsewhere. Research has not found reliable links between ABO blood type and personality or relationship success. Using it to judge a partner or colleague is known in Japan as bura-hara (blood-type harassment).