[Personality Test & Blood Type Diagnosis] Check your personality and compatibility with your crush!
People have long whispered that personality differs by blood type—like “Type A people are meticulous” and “Type O are laid-back”—but in fact, there’s no scientific basis for this at all! Still, perhaps because of ingrained stereotypes, many people readily accept statements like “this blood type tends to be like that.” In this article, we’re setting aside the fact that there’s no scientific evidence and have gathered blood type quizzes and psychology tests related to blood types that you can enjoy as a game.
Please enjoy them casually!
- What’s Your Type? A Collection of Trivia and Fun Facts About Blood Types
- [Personality Test] A must-see for couples! Check your compatibility with the one you love
- [Korean Personality Tests] A curated selection of the trending MBTI assessments and fun quizzes!
- [Compatibility Diagnosis] A psychological test to find out who you’re compatible with
- Personality Test: Fun! Psychology Test Collection
- [Personality Test] A Must-See for Those with a Crush! A Love Diagnosis to Boost Your Romance Luck
- Can you see the hidden true nature you haven’t noticed? A psychology test that reveals your personality.
- [What Are Your Romantic Tendencies?] A Psychology Test to Learn How to Find Someone You Like
- Compatibility with every being? Recommended compatibility diagnosis psychology test
- [Personality Test] Fun and Entertaining! Carefully Selected Tests That Everyone Can Enjoy Together
- [For Women] A roundup of psychological tests that reveal your love life and personality
- [Perfect for parties and group dates] Love, compatibility, and personality psychology tests
- Are you okay? A diagnosis of the types you dislike and how much you’re disliked
[Personality Test & Blood Type Diagnosis] Check Your Personality and Compatibility with Your Crush! (21–30)
Love circumstances by blood type

An anime-style explanation of those familiar love-life patterns by blood type.
Of course, you can’t diagnose someone’s personality clearly just from their blood type, but by analyzing phenomena like “People of type XX often do this when they’re in love,” you’ll find yourself thinking “I see,” having a laugh, and enjoying it.
Knowing each personality—impulsive, sincere, romantic, and so on—also changes how and when to confess your feelings.
Using this video as a reference, it’s a good idea to identify the points to watch for by blood type and the effective ways to win someone over, then make a plan and give it a try!
A personality test to find out the blood types of the opposite sex that are compatible with you

Focus on blood type compatibility! In this personality test, we explore which blood type of the opposite sex is most compatible with you.
Imagine a meal as a reward for your hard work—based on what comes to mind, differences in personality, ways of thinking, and compatible types become clear.
It also mentions blood types for the compatible categories and provides easy-to-understand indicators, making it easier to spot compatible people when you pay attention to those around you.
Be sure to use it as a reference!
[Personality Test & Blood Type Diagnosis] Check Your Personality and Compatibility with Your Crush! (31–40)
A personality test to reveal your hidden blood type

Are you familiar with Mendel’s “laws of inheritance”? Or rather, since everyone should have learned them in middle school, we’re all supposed to “know” them.
Dominant traits, recessive traits—yes, that stuff.
They gave me quite a headache back in my student days.
What I’m introducing here is a more detailed blood type assessment than the usual four categories—for example, even within type A, there’s an A that tends to come from lineages with many type O ancestors, or an A that leans toward AB, and so on.
It takes a bit of time because you answer 20 questions, but it’s recommended for those who enjoy blood type fortune-telling.
Give it a try when you have some spare time!
O-type instruction manual psychological test

Kana Nishino’s “Torisetsu” has become a staple song at weddings.
The lyrics, which sum up a woman’s sweet, needy feelings—“I’m this delicate, so I want you to always put me first”—are brilliant.
In that sense, you really feel how important a ‘user manual’ can be.
So here’s a user manual just for Type O folks.
It’s highly recommended if your friends, acquaintances, or especially your partner is Type O! Reading this might even reduce how often you argue.
It’s also a must-read for Type O people who don’t fully understand themselves.
Knowing yourself really is important.
A psychology test to guess your blood type

Even if you don’t really believe in blood type horoscopes, when you meet a meticulous person you can’t help thinking, “Are they type A?” I happen to be surrounded by a lot of quirky people, and many of them tend to have the less common blood types.
Even though each type has a one-in-four chance, it’s still impressive when someone guesses a blood type right on the spot.
I think you’ll have a great time with this, so try it out with close friends.
This personality quiz will surely come in handy in almost any situation—welcome parties, socials, you name it!
A psychology test that reveals the dual nature of your blood type

A quintessential music playback device of the Showa era—the cassette tape.
We used to pack our favorite songs onto a cassette, just a bit bigger than a business card, and trade them with friends… I wonder if that resonates with younger generations? Like vinyl, even the terms “Side A” and “Side B” carry a nostalgic ring.
There’s also a ‘front and back’ style diagnosis for blood types that reveals the dual nature of each type—right here.
Who would’ve thought even Type A, known for being earnest and meticulous, has a surprising flip side! It’s an excellent blood-type diagnosis that lets you discover your own duality.
A User’s Manual for Type B: The Psychology of Love

Type AB is said to account for 9% of Japan’s population.
Which celebrities have it? Among actresses, there are Suzu Hirose and Kanna Hashimoto.
In comedy, Asako Ito and Kanpei Hazama have it, and both members of the duo Ucchan Nanchan are AB.
Among artists, you’ll find big names like Gen Hoshino and Daichi Miura.
Looking at this lineup, it seems like they’re a collection of distinctive people who, in a good way, don’t fit neatly into any one box.
What do you think? This is recommended for anyone who wants to learn more about type AB.
It’ll surely make you chuckle.



