Both series are comedies that involve organizations of heroes with unique, sometimes strange, abilities, costumes, and names. Both main characters are also outliers among the heroes - Saitama is extremely over-powered, while Izuku is the only hero at the academy without powers.
JaserHyakuya asksDoes Guren's bond with Noya make him stronger than The Absolute Sword, Zekken? "It pains me to see someone so pitifully weak," Guren said with a laugh, drawing his sword. Shadows escaped from the sheathe.
Yuuik just smiled. This guy had fake power from a demon. She had... Mother's Rosario!