Engine issues aside, can we have a word about how the "teasing scenes" are actually much better than the hardcore scenes? The Onsen and the Alleyway scenes were hot as fuck, there was a lot of potential if it were to have more progression there, sadly went by unused and the hardcore scenes both at the house and love hotel were underwhelming, especially compared to Yasuka hardcore scenes, in fact I just went ahead to the gallery and enjoyed Yasuka's scenes instead after I finished the build. Noruko update was similar, the scenes following up to the reveal was better than what followed, hardcore scenes simply lacked the "domination" aspect even the first scenes could achieve. BTW camera/perspective is too far off from the action sometimes, really takes away from the experience.
Back to the update, I think MC had no reason to hold off in the alleyway, things could easily escalate there and then, especially since the build requires friendzoning Asumi. I understand the need to take things slow but MC at that point wouldn't hold off, he's basically a womanizer so... Maybe it can be reworked with more scenes or a bolder approach is implemented where MC advances to get her as well, could hit a unique chemistry.