|Dying Will Mode|
|Manga Debut||Chapter 1|
|Anime Debut||Episode 01|
Dying Will Mode, also known as Deathperation in the Viz translation, is a mode that can be taken when a person is shot with a Dying Will Bullet or when swallowing a Dying Will Pill. It's the first type of Dying Will Mode that Tsuna uses in the series.
When someone enters Dying Will Mode, it uses the pressure a person faces during a crisis to externally remove their body limiters, and increase their strength and need to fulfill their Dying Will.
Entering Dying Will Mode changes ones personality depending on the user. When Tsuna enters Dying Will Mode, he becomes very hyperactive and loud, and gains renewed confidence in himself, which is very similar to the behavior of Ryohei Sasagawa.
While in this mode, the user feel as if their body was breaking, yet they were prepared to take on anything, as well as be unafraid of their body being destroyed.
The effects of Dying Will Mode will only last 4-5 minutes, then the user returns to normal. A notable side-effect is their clothes rip off, down to their undergarments.
The Dying Will Flame also appears on their head. Reborn also exhibits that firing the Dying Will Bullet into different parts of the body results in different effects such as foot propellers, huge fists, etc.