I've been searching for an instrumental of this song for over a year, and I've heard that others have too. I did manage to find a music box version of Killua's Character
Hunter x Hunter Killua Zoldyck the Cursed VS Shoot - YouTube
TELL ME - Lyrics (Killua Zoldyck) by xcredensjustitiamx on DeviantArt
Tell Me ~ Instrumental Killua Hunter x Hunter - YouTube
Stream Tell me - Killua from Hunter X Hunter by Ink!Sans~ | Listen online for free on SoundCloud
Hunter x Hunter (2011) - Tell me (Killua's Theme Clean Instrumental) - YouTube
Stream Fire Force Season 2 (OP TV SIZE) SPARK-AGAIN | INSTRUMENTAL by Arnold02 @YouTube | Listen online for free on SoundCloud
Hunter x Hunter - Tell me (Killua/Kirua's theme song) - YouTube
hunter x hunter killua song|TikTok Search
Hunter X Hunter "Tell Me" (Killua's Theme Song) Instrumental Remix - YouTube
[AMV] 【Hunter X Hunter】Tell Me (Killua Character Song) - YouTube
Tell Me (Killua's Character Song) - Song Lyrics and Music by Mariya Ise arranged by makouha on Smule Social Singing app
Stream Anime4Life110160 | Listen to Hunter x Hunter playlist online for free on SoundCloud
Stream Juliet I Aca Martinez V | Listen to Related tracks: Hunter X Hunter - Tell Me (Killua - Kirua's Theme Song) playlist online for free on SoundCloud
Le PROBLÈME derrière le Personnage de NANIKA ! - Hunter X Hunter - Bstation
Stream Anime4Life110160 | Listen to Hunter x Hunter playlist online for free on SoundCloud
Tell Me (Killua Character Song) - YouTube
Tell Me ~ Instrumental Killua Hunter x Hunter - YouTube
4k Hunter x Hunter (Quality test) - YouTube
Tell Me】~HunterxHunter(2011)~ [lyrics] -Killua Character song- - YouTube
Ginpatsu no Lullaby (銀髪のララバイ) [Killua's Theme] - Hunter x Hunter | Piano Arrangement - YouTube
Stream Tell Me Instrumental (Killua - Hunter X Hunter) by Seth Mashate | Listen online for free on SoundCloud