Koyun built a wall in her heart out of a friendship that went wrong — and Ice Wall is, in this site's terms, a rare piece of youth manga that spends an entire work on the recovery of an avoidant. The logic inside the person who built the wall, and the patience of the ones waiting in front of it. Ahead of a second anime season in autumn 2026, here are the four of them, mapped.
This page reads 4 Ice Wall characters through three layers: MBTI as the outward personality, attachment style as the hidden side, and a Big Five type. Rather than simply assigning a type, Why this type from what they do in the story and where they came from — that is how this site works.
📊 Attachment styles across the Ice Wall cast
The comparison baseline is the attachment split across 42,256 quiz responses: 30.1% secure, 15.5% anxious, 13.7% avoidant, 40.6% fearful-avoidant.
Koyun's ice wall is a perfect figure for the avoidant defence. And that the three people around her are secure is this work's kindness: nobody breaks the wall down. They show her, repeatedly, a relationship that does not break, and the wall melts. This is the recovery model of attachment theory, exactly.
🧩 Reading the relationships in Ice Wall through attachment
Ice Wall is about someone who decided, out of an old wound, not to make relationships. Koyun built a wall out of a friendship that went wrong in middle school and chose being alone. Minato does not hurry and goes on waiting, and that waiting is what melts the wall. Yota keeps coming back with a head-on brightness, and Micchan says plainly whatever needs saying. Four ways of holding distance, drawn exactly apart.
📖 Character list (tap to jump)
The artwork is 16 MBTI types × 4 attachment styles = 64 combinations character images. When the same picture appears twice, those two match all the way down to the 64-type level.
🧊 Koyuki Hikawa: MBTI INFP, attachment avoidant
Koyun. A high school student builds an "ice wall" in his heart from the scars of past friendships and chooses one person.
MBTI radar (INFP dominant four axes + attachment stability)
Big Five radar (five factors + hidden-side axis)
Why Koyuki Hikawa is INFP × avoidant
There is a rich sensitivity and a kindness inside, and a wall goes over it before any of it gets out — an INFP of introverted feeling (Fi).
🌊 Minato Amamiya: MBTI INFJ, attachment secure
Minato. Although she is gentle and intelligent, she continues to quietly watch over Koyun, harboring regrets about her past.
MBTI radar (INFJ dominant four axes + attachment stability)
Big Five radar (five factors + hidden-side axis)
Why Minato Amamiya is INFJ × secure
Does not prise Koyun's wall open; measures the distance and builds trust over the long run — an INFJ of introverted intuition (Ni) and extraverted feeling (Fe), reading what is inside someone.
☀️ Yota Hino: MBTI ESFP, attachment secure
Yota. A straight forward person. I keep going to the wall of Koyun with the brightness of my body.
MBTI radar (ESFP dominant four axes + attachment stability)
Big Five radar (five factors + hidden-side axis)
Why Yota Hino is ESFP × secure
Turns whatever he thinks into words and action on the spot — an ESFP of extraverted sensing (Se). Coming back the next day exactly the same after Koyun has been cold to him — that repeating positivity — is a trick only someone secure can manage, because he does not take a rejection as an attack on who he is.
🎀 Miki Azumi: MBTI ESTJ, attachment secure
Micchan. My sister's skin is smooth and smooth. Be honest in your friendships and say what needs to be said.
MBTI radar (ESTJ dominant four axes + attachment stability)
Big Five radar (five factors + hidden-side axis)
Why Miki Azumi is ESTJ × secure
Dislikes an ambiguous mood and goes at trouble between friends head-on to settle it — an ESTJ of extraverted thinking (Te). Her feeling for her friends is deep and she shows it in practical action rather than damp sympathy.
🔬 A column digging into how the people in Ice Wall are connected
For readers who want more than one character at a time.the relationship itself taken apart through attachment theory.
❓ Frequently asked questions
How many Ice Wall characters are listed here?
Ice Wall currently has 4 characters listed. Each one carries MBTI, attachment style and a Big Five type, with the reasoning for the call. (Koyuki Hikawa, Minato Amamiya, Yota Hino and others)
Which attachment style is most common in Ice Wall?
Of the 4 listed here, the most common is secure at 3 (75%). On MBTI, INFP leads with 1. Ways of keeping distance differ even inside one work, so the same MBTI does not mean the same way of relating to people.
Is this type assignment official?
Not official. This is our editorial reading, based on actions and descriptions in the work. It is not a psychological diagnosis and not the view of the people or studios involved.
Can I find out my own type?
A free 46-question quiz crosses the 16 MBTI types with the 4 attachment styles into 64 types. No sign-up. Reading it against the Ice Wall cast makes your own way of keeping distance easier to see.
46 QUESTIONS
Who in Ice Wall are you closest to?
You are placed in one of 64 types, MBTI crossed with attachment style.
About five minutes. No registration. Free.
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So which of them is closest to you
Among the 4 characters in this work, the most common attachment style is Secure, with 3 (75%). The most common MBTI is INFP. Once you know your own combination, the same list starts showing you who you are close to.
Seen from the outward personality Big Five test, and how you match your favourite Compatibility.
This type reading is not official. It is our own estimate from each character's publicly known words and actions, offered for entertainment.