Track List

Release Date: 2025/12/26

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From before we can even remember, opantsu -our underwear -has always been the closest thing to us.
Dirty? Shameful? No.
Opantsu is our friend, always protecting us.
Now, say it with us - OPANTSU!

Past Rank In

OPANTSU!

iTunes Store • J-Pop TOP SONGS • Indonesia • TOP 29 • 2 Oct 2026

Past Playlist In

OPANTSU!

Spotify • New Music Everyday - tuneTracks (curated by TuneCore Japan) • 26 Dec 2025

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