Mob Psycho 100 — All Theme Songs

3 Openings · 2 Endings

Mob Psycho 100 Opening Themes

OP 1Season 1

"99"

by MOB CHOIR feat. sajou no hana

About the artist: MOB CHOIR is an anime-original vocal project whose opening became one of the most analysed in history — the number "99" ticks toward 100 in the background of each episode's opening, syncing with the count until Mob's emotional explosion.
Fan reception:: Widely considered one of the greatest anime openings ever made, both musically and visually. The hand-drawn animation style is intentionally crude and maximally expressive.
OP 2Season 2

"99.9"

by MOB CHOIR feat. sajou no hana

About the artist: MOB CHOIR returned with a direct continuation of the first opening — the counter now ticking toward 99.9, acknowledging how close Mob gets to his limits without quite breaking.
Fan reception:: Received as worthy of its predecessor. The evolution of the counter concept was immediately noticed and celebrated by fans watching for it.
OP 3Season 3

"1"

by MOB CHOIR feat. sajou no hana

About the artist: The third opening titled "1" rather than continuing the counter — signalling that Season 3 is about Mob finding value in being an ordinary person rather than about his psychic ceiling.
Fan reception:: Considered the thematic peak of the trilogy. The counter going backward toward 1 — meaning one person, enough — made fans emotional in the first frame.

Mob Psycho 100 Ending Themes

ED 1Season 1

"Refrain Boy"

by All Offs

About the artist: All Offs is the musical project of ONE, the manga's original author. His deliberately lo-fi, bedroom-pop ending gave the series its most authentically humble closing note.
Fan reception:: One of the most beloved anime endings for its DIY aesthetic. The author's own voice on the ending credits signalled the series' anti-pretension values perfectly.
ED 3Season 3

"Cobalt"

by sajou no hana

About the artist: sajou no hana, the vocal project behind the openings, provided Season 3's ending as well — creating a cohesive sonic bookend for the season and the series.
Fan reception:: Praised for its emotional completeness. Fans familiar with the opening vocalist found new layers in hearing the same voice close each episode softly.

Mob Psycho 100 Theme Song — Frequently Asked Questions

What is the Mob Psycho 100 opening theme song?

The first Mob Psycho 100 opening theme is "99" by MOB CHOIR feat. sajou no hana, playing during Season 1. Widely considered one of the greatest anime openings ever made, both musically and visually. The hand-drawn animation style is intentionally crude and maximally expressive.

Who sings "99" from Mob Psycho 100?

"99" is performed by MOB CHOIR feat. sajou no hana. MOB CHOIR is an anime-original vocal project whose opening became one of the most analysed in history — the number "99" ticks toward 100 in the background of each episode's opening, syncing with the count until Mob's emotional explosion.

What episodes does "99" play in Mob Psycho 100?

"99" by MOB CHOIR feat. sajou no hana is the Mob Psycho 100 Opening 1, playing during Season 1.

Who sings "99.9" from Mob Psycho 100?

"99.9" is performed by MOB CHOIR feat. sajou no hana. MOB CHOIR returned with a direct continuation of the first opening — the counter now ticking toward 99.9, acknowledging how close Mob gets to his limits without quite breaking.

What episodes does "99.9" play in Mob Psycho 100?

"99.9" by MOB CHOIR feat. sajou no hana is the Mob Psycho 100 Opening 2, playing during Season 2.

Who sings "1" from Mob Psycho 100?

"1" is performed by MOB CHOIR feat. sajou no hana. The third opening titled "1" rather than continuing the counter — signalling that Season 3 is about Mob finding value in being an ordinary person rather than about his psychic ceiling.

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