Kurapika: Hunter X Hunter

Hunter X Hunter’s Kurapika was fixated on destroying the Phantom Troupe. Although befriended the heroes during their time in the Hunter Exam, he grew distant from them over time. Since Gon and Killua convinced him to spare Chrollo in order to disband the villains.

Kurapika felt resentment that his heart wasn’t yet at peace. This was seen through the fact that he didn’t visit Gon in the hospital after the brutal events of the NGL. He was too busy obsessing over his own hatred to visit.

Nighteye: My Hero Academia

Nighteye was one of the most enigmatic characters in My Hero Academia. Despite being a pro, his premonition of All Might’s demise caused a wedge between the two and left him emotionally distant. Nighteye appreciated spending time with his assistant, but they were never especially close.

He may have been willing to give his life in the line of duty, though such diligence reflected the strength of his conviction rather than profound sentimentality. Nighteye’s death was tragic, but it would have been worse if there was anyone he was actually close to.

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Sai: Naruto

Sai’s troubled childhood was unlike most Naruto characters. Raised by the Foundation, emotion was trained out of him to such an extent that he had to actively learn human behaviors through a handbook. Despite Sai’s attempts to fit in, he stood out from the Konoha 11 as a detached and emotionally devoid shinobi.

All the same, Ino found him charming, which resulted in their marriage sometime between Shippuden and Boruto. Sai may still struggle with loving others, though he does not use his past as an excuse not to try.