Cheat MC got jealous. which is funny considering that he had all the power AND harem. but it's fair point that 500 years of sword-swinging is still a lot of sword swinging
@fakeirish Eh, there was that whole montage timeskip back in chapter 5. Her getting interested in him probably happened during that, though I agree that nothing really seemed to indicate it even then. Might be some flashbacks to fill it out in the next chapter.
@Kyujyu yeah the cheat mc one is a little dip shit who has some sort of pride for his cheat skill. There is a difference between all powerful and the most skilled. You can have loads of power and have no idea how to use it while having little power and loads of skill can get you damn near anywhere. Though I think in most battle cases strength and skill improve at the same time just at differentn rates.
I guess the god knows that sage arts is the strongest given proper training that's why he send him to train instead. Well, even without training being able to manipulate space, gravity and life force itself is already outrageous.