Real talk: the function of the Dying Will/Criticism bullet distracted me a LOT
Like, Tsuna gets hit with dying will, Tsuna becomes a screaming berserker who’s entire reason for living is like. taking a hella nap. sure, whatever
But when Kyoko and Haru get hit with the bullet, their behaviour is pretty similar to tsuna in hyper dying will mode (very calm and quiet, though without the ability to use rational thought), which begs the question: is there some underlying circumstance that modifies behaviour? How does this lead to the Criticism bullet?
Here is my theory: With a Dying Will bullet, the natural disposition and level of willpower is important. Kyoko and Haru are calm because they have unremarkable personalities (in that they’re not particularly wilful or fearful), and Tsuna is screaming berserker because he’s cowardly and full of nervous energy (notice how he has to announce what he’s ready to do? He’s psyching himself up for it!)
Which brings me to wonder about the Criticism bullet, and what’s up with that. Why would being scolded remove your internal limiters? Until you remember that Tsuna is completely resigned to criticism; when he was hit with the Lament bullet, his reaction was literally “eh, whatever, I know”. His reaction to criticism is open acceptance! The Criticism bullet probably would not inspire Hyper Dying Will mode in anyone else, it’s tailor-made to Tsuna’s personal disposition.
Also, for someone who has extreme flame levels, extreme desire to fulfill his objective, and an extremely harsh disposition, shooting Hibari Kyouya with a Dying Will bullet would without a doubt summon a demon from the depths of hell. Terrifying.
(Accompanying art is just a doodle of Tsuna if his end-of-series disposition affected his usual Dying Will mode. Still nervous-energy berserker, but a much quieter one.)