Your side characters were fantastic. Stabbey Mikey was fantastic, Fit Jack and Hiromi were all extremely good and helped maintain a very good tone.
The scenes, the build-up to them and the love interests were very good. Jasmine didn't get quite enough character focus and Aiko not enough scenes but only by comparison to the others, which were all superb.
Which is why the endings being extremely naff was frustrating. The Harem ending having no text, the cemetery ending being depressing and mediocre being the big ones I feel I should mention. (I couldn't even imagine betraying my buddy Mikey so I didn't go for the others) It was faltering at the last minute and I feel it deserved a little bit better when the rest has been so great, especially as I'd hoped for a harem scene or at least some preggo sex, as the limited threesomes had shown you had a good idea for multiple scene compositions and therefore I was sad I couldn't go for step-mom/teacher, Jas/Aiko or some other pairings.
That said, for a first work, some imperfections are to be expected and seeing as you did plausible characters, great scenes and maintained a sexy comedic tone of the best kind (even getting some actual laughs from me, which is rare indeed)and lastly (but by no means least) focused on the patrician fetish of pregnancy means I greatly look forward to your continued work.