It's just a leftover scene from earlier in the game. It doesn't have any relevance at this stage of the game

The gym still can't be accessed. There aren't many locations in this game, so having all the content of one of them, completely unavailable through several consecutive updates is unforgivable. This should have been fixed, before any new content was rolled out

Having played this game for a while now, I have concluded that the NTR pathway is a waste of time. Initially there are some hot scenes at the weekend and in the basement, but the problem is that they never evolve, and when you've played each one, that's all you get. So you're repeating the same scenes ad infinitum, and there aren't that many of them. Only Alexis seems to have some progression, the other women are all ultimately dead ends.

On the non-NTR pathways however, the content changes over time, so even though there is repeatable material, there is eventually some progression in the game. It seems to me the Dev wasn't really invested in the NTR material, and apart from Alexis/Davide content over time he just lost interest in it

Also to reach the NTR content requires a very low relationship score. But all the daytime content is made up of activities that build relationships between the MC and the female characters, so during the day you're in a contradictory situation where he's making the girls into his sluts or lovers, but at night and during the weekend they suddenly become the sluts of other men. It simply doesn't make any sense, and there a lots of frustrating examples of the women contradicting themselves

The Dev appears to have got round the relationship building content during the day, by having the women lose relationship during the night. This makes no sense in the context of what has gone before, and seems to be there simply to allow people to reach a low relationship score, so they can access the NTR content. But this isn't always easy, because relationship is still being added during the day, regardless of the nature of the interaction with them.

Alexis has a good relationship with the MC, and therefore its hard to get her score low, since every interaction with her tends to increase relationship. So you have to ignore her, to lower relationship, which in the context of the game makes no sense. Because why would you ignore someone that you like? Nicole loses relationship the most, which is also nonsensical, because as his mother she is the person most likely to see the good in him.

To ultimately progress in the game requires the player to build sufficient love and corruption to carry out the weekend events. But adding love tends to raise relationship, more than adding corruption. Therefore it's necessary to lose it again, in order to access NTR material. Which is stupid, because why would a character have high love, but a very low relationship score. It just makes no sense.