Saitama vs. Awakened Garou

What are you supposed to be?

Saitama vs. Monster Garou is the battle between Saitama and the Hero Hunter Garou, who has become a monster.

Prelude
After defeating Sage Centipede, Garou observes the surroundings and cannot see any S-Class hero. He comes to the conclusion that they have all been taken down and that it is the time for him to reach his ultimate goal, to become "Absolute Evil". However, a sudden anxiety feeling comes across him, much to his concern. As he is wondering what's happened to Evil Ocean Water, to Garou's surprise, Saitama appears before his very eyes. Although not knowing Saitama's identity, Garou still answers Saitama's question regarding what he is by stating that he is a monster who will cast all of humanity into the depths of despair and become "Absolute Evil". Saitama is confused about whether Garou is evil considering he's helped a helicopter from Sage Centipede. Garou reasons that he needs witnesses to spread fear and to know he is stronger than any hero and monster, stating that "Absolute Evil" correlates with absolute strength. Garou then tells Saitama to leave and quit his hero job, as he will annihilate both the Monster Association and Hero Association. After listening to Garou, Saitama begins to leave without acknowledging Garou as a monster, which prompts Garou to doubt if the hero was following what he said. Saitama, with a frustrated expression, speaks to him that he went out of his way to complain about the noise and somehow his house later got destroyed. Because of that, the hero is extremely upset and says that he would rather blow up the entire planet, making Garou shiver with his words. As Saitama leaves, Garou calls out to him, saying how he will pay should he underestimate "Absolute Evil" and charges at him with a punch. Unfortunately for him, Saitama is faster and with an impulsive punch, knocks Garou back before the latter could land the hit. After being punched, Garou manages to remember Saitama, identifying him as the bald guy he's run into several times before.

Battle
Garou recovers from being punched by Saitama and starts fighting him for real. They begin exchanging blows while crossing large distances, reaching far into the sky. Saitama attacks Garou with a punch aimed at his head but Garou manages to dodge it before ax-kicking him into ground, causing a landmass to severely crack. When Saitama stands up on his feet, Garou leaps down towards him with a hand-chop, striking his head directly, causing a forceful impact on the surroundings. However, the hand-chop is not enough to faze the hero, who retaliates with a simple headbutt that shatters Garou's forearm. Despite this, Garou manages to regenerate his forearm quickly and attempts a punch on Saitama, although the Caped Baldy is faster, punching him back first. After being knocked away a considerable distance by Saitama, Garou's body, in response to his anger, undergoes a mutation that increases his size and stature as well as his strength. At this moment, Tareo approaches him and tells him that he is a hero, which annoys Garou, who tries to explain again that he is not at all a hero. Even after what Garou says, the boy still insists that Garou is the greatest hero in his point of view and tells him to stop pretending to be a monster. Saitama slowly comes up to the two of them while commenting on what Garou has done, including hunting heroes, crushing dojos, and now playing monster and making kids cry. As Saitama takes his steps towards the Hero Hunter, Tareo tries to stop him from further fighting the hero, although Garou still punches Saitama hard in the head after being provoked by the Caped Baldy. Garou is surprised that Saitama is unscathed even after taking a punch so hard head-on while Saitama reassures a shocked Tareo that Garou will not be able to hurt him. Garou then tries to kick Saitama but is slapped away by the hero. Saitama asks Tareo if the boy wants him to stop Garou, which Tareo nods. Now that there are only the two of them, Saitama questions why Garou is acting like a monster despite previously having helped heroes. Garou tries to reason that he was merely using them to further his goals. After Saitama lumps Garou's "Absolute Evil" together with world peace, Garou angrily charges at Saitama. He manages to parry a punch from Saitama, hand-chops him in the right side of his face and lands a punch on his head before elbowing him in the stomach, all done very quickly. When Saitama grabs Garou's arm, Garou performs several lock-on moves that he eventually hits Saitama with a hard punch in the hip. Garou proceeds to use his God Slayer Instant Attack, slamming Saitama into ground with a flurry of punches and hand-strikes. However; Saitama soon emerges nearby after digging underground and throws a big rock at Garou while asking the Hero Hunter if he keeps avoiding his punches with martial arts, which Garou confirms while shattering the rock by rotating both his arms. Garou attempts a barrage of attacks on Saitama, but the hero manages to dodge, prompting him to remark that Saitama has amazing reflexes and agility but lacks skill and still has plenty of openings. Claiming to be able to read all of Saitama's moves, Garou declares that the hero will lose due to his lack of technique and being a complete amateur before sending him crashing into several buildings with his God Slayer Ascending Attack. Garou quickly catches up to Saitama and uses his Great Power Attack, crashing him through the buildings, ultimately pulverizing them and generating dust smoke. Believing he has won, Garou states that Saitama may have incredible tough skin and bones but he cannot train his internal organs, which Garou believes to have been damaged by his attack. However, to his surprise, Saitama emerges completely unharmed. It is then shown that Garou, in destroying the buildings, accidentally saved five Hero Association staff members who have been inside an underground shelter trapped in the rubble. As all of them show their gratitude to him before leaving, Saitama ironically comments on how "Absolute Evil" is good at saving people. Enraged, Garou attacks Saitama again and soon evolves further, taking on a demonic form with a pair of wings and longhorns. While defending against an onslaught from him, Saitama states that Garou has improved a little, which angers the Hero Hunter, who with a punch, knocks him into a soon-to-erupt volcano. Garou immediately charges at Saitama and strikes him with both of his open palms, causing the mountain behind to shatter due to the powerful impact. After the attack, Garou is on his knees and panting while an unharmed Saitama simply punches him away. Recovering his balance, Garou is impressed that Saitama could withstand the attack that destroyed the volcano behind him. In destroying the volcano, Garou has accidentally saved a city from being covered by its lava flow, which catches Saitama's interest who comments that Garou has great hero instincts and reminds him of King. Garou continues his onslaught on Saitama, showing clear panic and trying to find ways to defeat the hero. Saitama dodges a flurry of Garou's punches and is excited to know how many hands he got, which Garou is then shown to have grown two more arms. Afterwards, Garou places two of his hands on Saitama and takes a form that resembles a jet while his remaining two arms emit energy to act as propulsion. Garou then uses his Extreme Power Attack, pushing Saitama into ground and creating intense seismic waves that pass through Earth's core. The attack is so immensely powerful that it distorts the space around Earth, moves tectonic plates, makes a continent raise up from the other side of the planet, messing with the magnetic as well as gravitational fields and subsequently causing the planet to bulge. Despite his efforts, Saitama is still unfazed by Garou's mighty attack and retaliates with his Consecutive Normal Punches. As the two of them return from the Earth's depth, Garou tries to fend off Saitama's flurry of punches but fails, resulting in two of his arms being destroyed. At this moment, Garou recalls the "abominable fist" Sage Centipede has once mentioned and deduces that it is referring to Saitama instead of Garou himself. Saitama proceeds to punch Garou hard in the face, causing him to crash through several mountains and eventually fall to a massive puddle.

As he slowly gets up, Garou finally gives up on beating Saitama and desperately charges at him with a punch, only to have his fist caught by the hero. Afterwards, he demands the Caped Baldy to end his life. However; Saitama simply responds that he is willing to listen to Garou's issues with heroes and leads him to a nearby hut. Inside the place, the two are about to begin a conversation.

Trivia

 * In the original webcomic, after Garou transformed into a monster, Black Sperm referred to him as Awakening Garou (覚醒したガロウ, Kakusei-shita Garō). This term has not been introduced in the manga.