The manga is set in a post apocalyptic world where the world has been turned into an ice age. In this world there are people who have quir- Special powers and are called Blessed. One blessed created the ice age that they all live in. The male lead alongside his little sister is also blessed. They can regenerate any part of there body. So when the brother and sister where dying to the intense cold, a small village found them and decided to use whatever precious resource they have to save the kids. Agni (male lead) and Luna (little sister) decide to repay the village as well as live there by cutting off parts of there own body and using that to feed the villages. When a government guy shows up and realizes this is a cannibal village he decides to burn it using his quirk. However it will keep burning until the fuel it uses is completely burned up. So Agni crawls to his sister whilst regenerating and burning up only to find her taking her last breath. Unlike Agni his little sister powers are much weaker and cannot keep up with the eternal fire that has engulfed her. Unable to handle the Pain Agni finds solace in dying with her sister. However her sister tells him to live with her final breath. Slowly but surely Agni gets up. With 1 thought in his mind. To seek vengeance.

The manga was a lot more gruesome than I expected. Not just in grotesque detail but rather the entire depressing journey of Agni. This guy goes through too much shit... Like it was genuinely exhausting to read about this guy. His entire journey is just pain and more pain. If its not physical, its psychological. It's always one or the other and most of the times its both. It's like the author read Berserk and thought that Miura didn't try hard enough to break Guts' spirit. The amount of torture Agni goes throughout the series actually hurts me.

The constant back and forth of his mental health is exciting and fun to see. His growth of his character is incredible. Him understanding his role in life, giving up, getting back up again. His inconsistencies and pure indestructible will gives me shivers every time.

I think the side characters were alright. Like they existed to push up the main character. None of them really stole the show (besides maybe one....) but regardless they were in the background most of the time. Even when they had more of a presence I wasn't really into them all that much. Agni being a monster on fire really just kinda stole the show.

The action and hype and this series is great. The author makes sure you never forget this is a man constantly on fire. His entrances are always legendary. Where it just takes your breath away. The action in itself was great most of the time. The art is a bit rough around the edges and it especially shows during the fight scenes making it kinda hard to understand whats going on. But overall I think it does a solid job. There is another issue in which we don't see the fight at all. Because the author decides to do it off screen. This is quite disappointing as it happens twice. It definitely looked like big shit went down so why didn't we get to see any of it.

The ending to Fire punch was also quite alright. I won't say it was foreshadowed or it makes perfect sense. But there is solace in it and I was happy with it. After everything that went down this may not be the perfect ending but it was a satisfying one.

The strongest part about this series is probably the Heart. The fact that Agni desperately tries to clutch to his humanity. The fist bump, The heart of this series is extraordinary. I almost got quite emotional.

TLDR: One of the better series I've read this year 7/10