The line comes from Nanami Kento, the calm and methodical sorcerer in Jujutsu Kaisen, the manga and anime series by Gege Akutami. In Japanese, ato wa tanomimasu roughly means I leave the rest to you, a polite way of handing over unfinished work. Fans clipped the delivery because it fits Nanami's composed personality so well, and it spread through anime edits and meme videos where a character exits after doing their part. It remains popular because the phrase is short, instantly recognisable to fans, and works as a dry, understated ending to almost any scene.
About this sound
Nanami Kento's 'ato wa tanomimasu' line from Jujutsu Kaisen, meaning the rest is up to you, used in edits when a character hands over a task or leaves.
The clip captures Nanami Kento delivering his signature Japanese farewell in a low, steady, and unhurried voice, with each syllable pronounced cleanly and without any background music or shouting. It sounds composed and quietly confident, like a professional closing a job and trusting someone else to finish it. Because Nanami says it before walking away from a fight or a responsibility, the line carries a sense of finality and cool detachment. In videos it creates a calm, dramatic pause, letting the moment land before a cut, a reveal, or a punchline, rather than hyping the audience up.