Kyuubi from Naruto
People who have watched Naruto know what the nine tailed fox stood for. Hatred and self destruction. He had the highest form of hate. Despite that, he lends chakra to Naruto when he’s in need because after all these years he doesn’t want another master to pester him. With time, Kurama evolves from being a complete dick to super awesome.
That’s right. I said it. A good deal of the time that he saves or lends his chakra to Naruto, it is because he doesn’t want someone else killing him. He wants to do it. Add some cheek blush and it is obvious tsundere affection.
Ishida Yamato (Matt) from Digimon
In the recent Digimon Tri series, both Tai and Matt are seen clashing against each other. It’s not because their ideals differ, but because Matt’s tsundereness often makes it difficult for him to let out his feelings. Of all digi destined, Matt has the most difficult time in expressing his true feelings to his friends, not to forget his own brother.
Sei Handa from Barakamon
Handa gets pissed easily, acts all mighty when provoked. To add to it, he is stubborn and a self sabotager.After being pestered by the kids in the neighborhood he starts opening up little by little.