Non-Physical Interaction

Non-Physical Interaction is the ability to physically interact with objects or creatures that are intangible, incorporeal or otherwise non-physical.

Overview
The user is able to touch an intangible being that cannot be physically interacted with, such as a ghost. Or to gain access to realms/dimensions that otherwise cannot be physically entered.

Saitama is the only known character to possess this ability. He has been shown to use it in order to enter the Phoenix Space, which he "knocked on" until a hole opened up. Under normal circumstances, this should not be possible since the Phoenix Space is a spiritual plane that exists only within Phoenix Man's costume. Saitama's use of this ability appears to be a byproduct of his unparalleled strength, which is said on multiple occasions to defy logic and common sense.

During his fight with Cosmic Fear Mode Garou, Saitama has once again shown the ability to interact with non-physical objects by casually kicking away a hyperspace portal created by Garou, even able to grab and redirect it, much to Garou's shock.