The game is promising but evidently a work in progress. Talking and flirting are rng-based right now. That means progression is rng-based.
Her mood and stats with you don't do much right now. She could be maxed trust and attraction and still respond negatively to flirting which makes it seem like a painful grind. If progression was more linear (10 attraction = 50% positive 'birds and bees"; 20 attraction = 100% positive "birds and bees" and 50% "crush"; and so on...) then it'd feel rewarding.
But even if you do get max trust and attraction, there are only 5 animated scenes right now. Peeing on toilet, masturbating on toilet, bathing, or masturbating in bath. The last animated scene is just you jerking off to her sleeping at night.
The night time portion is unfinished. You can see that there are plans to add more to when she is awake and possibly some nighttime sex, but it's not here yet. You also cannot shower with her, but the option is there.
Overall, it shows promise but it's far from finished right now. You can't customize her height and bust, talk or flirt linearly, quick save and load, fast forward, and have sex. Nothing new is unlocked after 100 trust and affection. Currently cannot lewd the loli v0.38.