One Punch Man Manga Chapter 44

Sonic boasts about beating Genos and Saitama, but Genos surprises him with his speed and cuts off his topknot. They clash fiercely until Saitama steps in to stop Genos from causing destruction. When Sonic uses his ultimate move, Saitama counters with Serious Side Hops, overwhelming him. Sonic escapes, and Fubuki realizes just how powerful Saitama truly is.