I'm gonna do a whole breakdown of Hayato skillset before heading on to chapter 2 because I feel like I only described Lostvyane, I'll also add somethings for Lostvayne, So let's get started. And I might add a skill and weapon from a certain character.
Supernova: A very destructive and volatile attack where Hayato literally explodes, obliterating everything around him. This attack is dangerous because it will indiscriminately destroy everything anything in the explosion.
Red Sun: One of Hayato's less deadly attacks, although it still produces a heat of well over 6,000 degrees, Red Sun is an orb of solar energy that seeks out and incinerates a target.
Solar Flare: A basic technique used by Hayato where he simply uses solar energy to blind his opponent.
Sunspot: Hayato grabs his opponents and heats us the spot where they grabbed, usually resorting to cooler temperatures so as however, the heat is still quite intense and it causes permeant nerve and tissue damage.
Dark Sun: Hayato signature attack and one of his dangerous, even to himself. The Dark Sun creates an impenetrable sphere around him that traps anything inside of it where a combination of heat, friction, and pressure will literally compress and deconstruct everything into atoms. This is a sure-kill technique for Hayato but it takes a toll on his body but mostly to his arms.
(Like Midoryia)
Now were going to go over his awaken state if you read the description for this story I know I said I wouldn't add anything else from seven deadly sins but this gonna be a one time thing.
The One:
-Ignore Zeldris-
when his power is at its peak, for one minute he becomes the manifestation of power itself and his body dwarfs normal people. In this form, he is said to be invincible. It takes almost an entire army to take down Hayato in this form, his arrogance takes a big leap and acts like he doesn't need help.
Weapon: Divine Axe Rhitta
Since Lostvanye is small for him to handle in hi Us buff form he can call upon a special axe so that he can fight and it's name is Rhitta, Rhitta is a giant ornamental axe with a blade shaped like a crescent moon, similar to that of a Monk's spade. The axe also features two golden protrusions, one larger than the other, with the white tips of a spear, the longer one is in the middle at the top of the axe and the smaller one is on the opposite of the blade of the axe. The handle is dark blue and it features a golden semicircular guard with four golden spikes on it. Its design specs and distribution of weight are (likely intentionally) off; most of the weight is concentrated in the head, leaving it off balance, and even more difficult to wield than its impressive weight would already make it.
Now let's head on to Hayato's trusty shortsword.
Full Counter: This ability allows Hayato to reflect magic attacks aimed at him, back at the enemy, but with much greater power; therefore, the stronger the opponent's powers are, the rebound becomes. A prime drawback is that Hayato cannot initiate attacks himself. He is also incapable of reflecting attacks if the opponent does not allow him to read the timing/nature of their attacks. Physical, indirect, and continuous attacks can also not be reflected.
(Like I said in the bio physical and devil fruit attacks)
Hellblaze: Using this ability Hayato can infuse his sword into black flames and cut everything in it's path but it doesn't have enough power to kill someone.
Counter Vanish: With his palm facing an incoming attack, Hayato fold his thumb and little finger. He then, rather reflecting attacks, it completely disperses the attack used against him.
Revenge Counter: Hayato turns off his abilities so that he can take damage. After Hayato has taken enough damage, he charges his blade with power and strikes his enemy with it. This is considered to be Hayato's ultimate attack.
Physical Clones: Lostvayne's special ability that allows Hayato to create up to four or six clones of himself. The clones only retain a fraction of the original's power, with one clone having half the power level of the original. The halved power level is divided among each additional clone. Each Physical Clone is still able to use to its full potential as the attack focuses on the enemy's attack power rather than the one using Full Counter. This allows Hayato to use Full Counter multiple times on the same attack. Depending on the enemy and Hayato's power level, it is additionally possible for him to use his clones to fight the enemy as well as dealing and taking damage without Hayato himself getting involved in the fray.
I hope that clear some things about Hayato's abilities about his power's and moves I'll make Chapter 2 tomorrow, so have a nice day!