Warning! Spoilers for One-Punch Man chapter 162 ahead!
The protagonist of One-Punch Man, Saitama, has a difficult relationship with the other heroes of the Hero Association. Some like Genos look up to him immensely in a way he feels he can't live up to, while others such as Tatsumaki see him as little more than an annoyance; and the latter is certainly the most common. Yet, as they've built camaraderie throughout the latest series of disasters, it seems Saitama has taken a liking to at least one other hero.
Among the S-class heroes who've taken a liking to Saitama, there is of course Genos, as well as the secretly powerless King, both of whom he quickly befriended. As essentially the only witness to Saitama's destruction of the asteroid, the old martial arts master Bang saw a lot of potential in that power, and hoped to convince Saitama to do some training with him. Saitama, however, mostly sees martial arts training as an unnecessary waste for him, and was pretty dismissive of the invitation as a result.
Related: One-Punch Man Finally Delivers its Most Anticipated Fight Yet
In chapter 162, the most recent chapter of One-Punch Man released in Japan, Saitama comes up against Garou, recognizing him as the hero hunter who has been plaguing the Hero Association as of late. Despite initially refusing to fight him, Saitama does have a bone to pick with Garou—but it has little to do with actually fighting other heroes. Instead, Saitama is upset with Garou because of the stress his behavior has placed on Bang, his former master. Throughout this arc, Bang has felt responsible for Garou's actions, and believes he and he alone must be the one to put an end to his apprentice's misdeeds. Even his brother, Bomb, gave up his own dojo
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