I don't understand why almost all the H scenes have that primitive animations. Yeah, I understand your needs to show cumshots, but it's unrealistic. Liquid stopping in the middle of the air is nothing I've seen somewhere else. :-D It's not just the first, nor second chapter. This bugging me all the time. I understand that there are limitations what actually can be done using koikatsu, but what you are doing here is just creating low quality sequences. Also some of the dialogs needs some touch from people who has a higher education than elementary school and can write english. I'm obviously not the one to do that, but someone (maybe some fan) probably will help you with grammar and bugfix and maybe even with animations.
Just stating facts.