One-Punch Man - Volume 33
Life gets pretty boring when you can beat the snot out of any villain with just one punch.
Nothing about Saitama passes the eyeball test when it comes to superheroes, from his lifeless expression to his bald head to his unimpressive physique. However, this average-looking guy has a not-so-average problem-he just can't seem to find an opponent strong enough to take on!
At last, Saitama and Garo clash. Saitama admonishes Garo to consider the boy Tareo's feelings, but Garo only accelerates his monsterization. When he braces for defeat in the face of Saitama's overwhelming strength, he hears a certain being's voice and obtains transcendent strength of his own!