This matchup is very interesting, first off when they start off Taiyo is generally going to have way higher durability thanks to his hardening and wear it scales. Even in normal blooming, so Reno will fail to scratch him with normal bullets or attacks which will force him into 43% very quickly. in Profuse blooming his dura is scaling above 1 Kiloton as well
It would probably be in Taiyo's best interest to not take any attack from Reno despite the 1 KiloTons since his primary means of attack is usually is Cold Energy. This is particularly bad since Taiyo has zero cold or even ice resistance (not that it would matter since just keep powering up until his attacks work.
Getting shot enough would cause Taiyo be sealed both externally and internally in ice. Just one would be enough to cause Taiyo to become brittle and shatter. This energy is superior to the Freeze Rounds which is utilizes when officers are facing enemies that they can't even damage so they would first weaken them with freeze rounds before switching to burst rounds and shatter them. Essentially dura neg and sealing
Not to mention, the amount of amps Reno got, especially the one that allow him to amp his freeze rounds to such a level that a 7-A character didn't want to tank them despite having tank Reno's attack eariler without the amp and resort to using body shields
I don’t know if it’s possible for Taiyo to get through that level of fear manip but for now I’ll operate as if it’s a once off thing. And after that it’s done.
The Daikaiju's Aura is not something Reno uses often but he is capable of it. If he was to try and sense Reno, he would probably be afflicted by the fear of his cold energy and just be paralyzed, allowing Reno to score a free hits, which is GG at that point.
So now Reno’s in 43%, Taiyo will be pushed to use Profuse Blooming. Taiyo will have a clear speed edge, as he has multiple and better amps for speed like Stepping on flowers, profuse blooming and a borderline one shot move in Amaterasu. Reno will have more firepower but due to Taiyo being a stone wall it doesn’t really matter, especially considering Low Mid Regen. Taiyo has electricity blasts which will induce paralysis if he hits Reno with enough of them on top of that
Taiyo has to be careful when going into close combat with Reno since his suit let out passive cold energy, which is sub-zero and cold enough to slow down movements and Taiyo has no cold resistance so it will mess him up regardless of speed boost as hyperthermia happens.
Low-Mid regen doesn't matter in this fight considering that Reno's Durability Negation with Cold Energy will shatter him to multiple pieces. It works on regular Kaiju, who also has Low-Mid regen for nearly the same reasons as the Yozakuras. The Sealing will incapacitate him just as effectively. Taiyo's electricity blasts sound dangerous, he will have to first break Reno's forcefield that is always up and even when broken, Reno can simiply put up a new one.
Reno also got access to his own electricity blasts that will induce paralysis, even if it misses, it will cause chain lightning.
In regards to skill Taiyo likely has the edge, since he has instinctive reaction and could procog a perception blitz (one that was so bad he didn’t know what as going on, he would just blink and he’s been cut down, there wasn’t even a hint before the attack started).
Reno has instinctive reactions (both himself and literally his attacks). Reno has precog that works on perception blitz, in fact, it work on No. 9, who could perception blitz Kikoru, who is faster than Reno to point that he got outpaced by her effortlessly. His precog work through both tells and through experiences so it will just get better as the fight drags on
Against an enemy of equal stats (such as Kurogao) he basically took apart his fighting style step by step while bleeding out. And Taiyo is used to facing enemies much much stronger than him and holding his own. So Reno’s cold energy ice blasts will be unlikely to tag him. Taiyo has the common sense to know he’s finished if he lets himself be caught in the ice at all. He also has extrasensory perception that can detect Reno’s intent to kill or seriously harm him from far away. So any attack he would always see coming.
Also once he realizes Reno is stronger than him in attack power Taiyo won’t just fight straight, he’d try different strategies, or even try baiting Reno into grappling him then using Kanrai to blast him with lightning. After that he’s in real trouble
Reno's Intelligence section say all that is needed to be say as Reno is also capable of employing different strategies to overcome stronger and/or faster foes
Reno on the field is primarily is a long-distance fighter, he won't try to get close enough to grapple him.
If the fight drags on long enough, since both are willing to kill, an Amaterasu slash to the throat is a guaranteed kill no matter what, due to how much of a speed increase it is. So Reno ain’t dodging it. Taiyo almost guaranteed will
True, so both has access to potential one-shot moves. Although Taiyo depends heavily on aiming to the throat as if Reno amps himelf to 7-C, then aiming anywhere else will cause Reno to tank it. He also got that forcefield will be hamper the damage
I will say Reno has his own advantages with his better lifting strength, and catching Taiyo in the ice is an instant win if he invades Taiyo in it. He also has reactive evolution which could let him grow throughout this fight if it really drags out
I assure you the fight doesn't need to drag out for Reno's Reactive Evolution to work (although it would not be in Taiyo's best interest to do so regardless) as it is at the point where Reno can will himself to grow his Unleashed Combat Power when he feels like it, which increases physical strength, jumping, attack potency, precision, awareness, efficiency, accuracy, speed, range and agility
Or Maybe Reno’s Daikaiju Aura just cooks Taiyo idk
Any of Reno's fear manipulation would end the fight tbh
