Lost Cat

Lost Cat (迷い猫, Mayoi Neko) is an extra chapter included with Volume 8.

Summary
In a cafe, Saitama is given a mission by a Hero Association staff member, happy that he is finally recognized, Saitama accepts the mission before even hearing what it is. The man asks him to find a cat, since he probably has no obligations at the time.

At the park, Genos is waiting for a Hero Association staff member. The staff member tells him of a mysterious being he kept as a pet, which ran away, and asks him to get rid of it. The staff member tells him that resident of the suspected area of where said monster would be, will be evacuated under the pretense of a pollutants investigation, telling him the mission has to be done under secrecy.

On the streets, Saitama looks for the lost cat, Torako-Chan. Saitama is given a drawn picture that tells him that Torako has white fur, a blue collar and is supposedly cute, but is still stumped. The young daughter of a Hero Association staff member is there to help identify Torako, but ends up yelling at him because he was complaining, telling him that if he doesn't help she'll get him fired, Saitama then tells her he does not care if he is fired or not, and at the realization she may have to do it alone, the girl starts crying, which causes Saitama to comfort her, saying he will help her after all.

Genos is walking down the evacuated streets, noticing a trail of blood, which leads him to an alley. In the alley he finds 2 beaten up A-Class heroes, Peach Terry and Heavy Kong, who have received the same mission as him, but were defeated by the creature. Genos asks why they were not devoured, and Peach Terry tells him that it was probably due to the fact the creature sensed his arrival and fled, The creature: Demon Level - Grizzly Nyah, is then seen above Genos, clinging to the walls, ready to attack.

Saitama is still on the search for the lost cat, which he thought he found but was told otherwise. He then goes to an isolated area which is guarded by Tanktop Tiger and Tanktop Black Hole, who have no idea why, the two notice Saitama and are frightened, but still tell Saitama he cannot pass, and that only chosen heroes may go beyond that point, Saitama thinks that may count him as well, due to the fact he was requested for a job by a Hero Association staff member. Saitama, still thinking the isolated area was for his mission, is now in the isolated area comments about how weird rich people can be, and notices a cat. Meanwhile a wall to his right is breaking apart, and Genos bursts through it. Genos notices his master and thinks he was chosen for the same mission as him, when Saitama asks Genos why he is there, he tells him that he is in mid battle and that, and that his target is stronger than he anticipated, he then requested Saitama to leave it to him, Saitama then tells Genos to do his best, and continues on with his search. Saitama asks the girl about the cat, and tells her that a similar cat just came through.

Meanwhile. the A-Class heroes Lightning Genji is seen fighting another Grizzly Nyah, Lightning Genji manages to stun the Grizzly Nyah while dodging it's attack, he then tells the A-Class hero Stinger to attack, who then manages to sever it's right foreleg, and bring Lightning Genji back to his feet. A cracking sound is heard and the 2 heroes are surprised to find a Giant Grizzly Nyah behind them.

A great roar is heard and Genos notes that the Grizzly Nyah he had just beaten must have been the child, and that the mother must have given birth after it's escape.

Meanwhile, Lightning Genji and Stinger run from the "Mother Nyah" and notice a little girl running, the girl who was now chasing her cat Torako, and grab her before she can get back her cat. Torako is then seen with a mouse in it's mouth, and and rushing towards 2 little kittens in the bushes. The Mother Grizzly Nyah appears before Torako and the cat hisses at hit, standing it's ground, Saitama then appears before the cat and defends it from the Mother Nyah's attack, Saitama then grabs Torako and kills the Mother Nyah. The child is happy to see her cat once more, surprised she had given birth, the girl is suggested to take the kittens with her. Saitama then picks up the cat and notes that said job was harder for him than beating monsters, thinking he might not be fit to be a hero, to which Genos tells him that he had defeated the monster even so, to which Saitama tells him he was not informed of. Saitama is then scratched by Torako and threatens it, the girl realizes he is not the kind of hero for normal B-Class work.