Not 'introvert'. It's the clinical term for someone who hasn't left their room in months.

What a Japanese person actually thinks
Reads as a diagnosis, and a stigmatised one. Where an English speaker might wear 'INTROVERT' as a wry identity, this word names a condition families struggle with in silence.

Meaning

Literally: pulling in + shutting oneself away
Actually: Prolonged, severe social withdrawal — the official threshold is six months of not leaving home. Roughly 1.5 million people in Japan are counted under it, and it's treated as a public health issue.

Scores

Naturalness●●●●●

Correct and current term.

Coolness●●●●●

Six characters, four of them hiragana, describing a mental health crisis.

Watch out

highHeavily stigmatised in Japan. This is not a lifestyle label and it is not worn ironically here.

Get this instead

孤高 kokō
alone by choice, and above it all

Solitude as integrity rather than as illness. Dignified, and it's a compliment.

On skin

引きこもり

Orientation: vertical

N/A.