"Toxic Substance" (劇物, Gekibutsu, Tonari: 192) is the 147th chapter of the One-Punch Man manga series.
Short Summary[]
Garou battles Bomb, while Fubuki attempts to assist but struggles to keep up. Pig God notices the injured Tanktop Master and seeks help. Meanwhile, Genos rescues Tatsumaki from a massive Black Sperm clone. Fuhrer Ugly confronts heroes and the Council of Swordmasters members. Bang arrives as Bomb falls, who warns him of Garou's rapid growth.
Long Summary[]
Garou engages in combat with Bomb, both holding their own against each other. Fubuki observes the battle and attempts to assist Bomb against the Hero Hunter, but their movements are too swift for her to follow. As Fubuki loses her focus, Garou aims a strike at her, but Bomb intervenes, blocking the attack and delivering a blow that sends Garou flying to keep Fubuki away from the fight. Bomb then charges at Garou, distancing himself from Fubuki. Pig God appears in front of Fubuki and notices Tanktop Master nearby, gravely injured. Concerned for him, Pig God is interrupted when Fubuki requests his help to heal Tanktop Master.
Meanwhile, other heroes, alongside the Council of Swordmasters, continue battling numerous Black Sperm duplicates. Suddenly, a massive Black Sperm clone emerges from the ground, about to crush Tatsumaki. Just in time, Genos arrives and frees her by incinerating the monster. However, another large clone quickly appears behind Genos and slams him into the ground. Genos activates his suit's burial escape feature, which utilizes data from his fight with Tatsumaki, allowing him to quickly get back up. Together, Genos and Tatsumaki prepare to confront Black Sperm.
Fuhrer Ugly, in his mutated state, arrives demanding to fight Silver Fang, whom he blames for his horrific condition. Black Sperm mocks him, prompting Fuhrer Ugly to retaliate by spitting acid at several clones, melting them. Superalloy Darkshine attacks with his Superalloy Double Bazooka, but Fuhrer Ugly counters with his Forearm Melting Punch. Darkshine's attack is negated, and the acid on Fuhrer Ugly's body begins to dissolve his hands. Fuhrer Ugly then hits him in the chest with acid, causing him to writhe in pain on the ground.
Witnessing Darkshine's plight, Zanbai warns the others not to confront Fuhrer Ugly unarmed and charges at him with a sword. However, Fuhrer Ugly easily melts the sword with his acid-covered hand. He then spits acid at Zanbai, which dissolves through his head, killing him. Terrified, Atomic Samurai and Nichirin attack with Atomic Slash and Iai Rahu-Ashura Slash simultaneously, only to see their swords dissolve on Fuhrer Ugly's body, leaving him unscathed.
Meanwhile, Garou and Bomb continue their battle. The elder martial artist reflects on Garou's rapid growth and his newly integrated fighting style, questioning if it stems from monsterization. Despite being at a disadvantage, Bomb resolves to hold his ground until Bang arrives, preparing a powerful hidden strike. He strikes the ground to disorient Garou, but is taken aback when Garou perfectly counters his attack. With one decisive hit, Garou knocks Bomb to the ground.
Bang arrives just in time to witness his brother's defeat. Bomb warns Bang about Garou's remarkable growth, while Bang remains resolute in confronting his former disciple.