Going to leave some feedback here, just in case this gets revived, because it had some promise.
Starting with characters, I'd say more in-depth scenes are preferable instead of dumping a large amount of introductions in a short duration. Either of the the gym, library or coffee shop scenes can conceivably be moved to a different day, allowing us to expand upon specific characters or locations. The women are not defined beyond fitting in one of 2 categories - either lustful or reserved. There could be more variety in their personalities, but we don't get to explore it due to the big problem - the plot device which seems forced and completely overshadows everything else in the intro.
This might come off as a rant, but it's something all devs need to remember - putting the MC in (sexually) embarrassing situations does
not constitute comedy. It's next to impossible to pull off well and to top it off - it doesn't fit within the established Elsaverse tone at all. As a trope it's been overused to an excruciating degree in other games already and only disconnects the player from the character, when developers should want the opposite. Some succeed despite this type of shit, but never because of it. Also if you're going for the giant-cock routine - don't.
Still, I do understand the erection is a story point, but it takes way too long to resolve, becoming incredibly repetitive by the end. It's also completely non-believable that the people MC meets are stupid enough to not notice his exact problem given the poses and faces he makes. The contrived desire to avoid public restrooms is also unexplained, since all that's required is a lockable stall.