@Velsy it's because the goddesses are thirsty as hell. You can see it in the later chapters especially. Almost all of the goddesses want the MC dick. It can even be seen in this chapter, when Kousuke talks about how nice Asura is for sending two people to help him, her chibi head looks a little like it did something for others reasons and is just going along with the reason he gave.
@WoodyCyber no she is just a sadist and beating the shit out of things brings her pleasure.