Try
Summer Memories.
You can ask for sex at any time, and as you progress, there are more scenes to see that get very kinky. Trying to unlock all the scenes is fun.
More detail:
It's a simple ressource management game where you spend time with 3 characters to raise affection (each day is 4 periods where you can do 3 actions at first), then after a point you can ask sexual favours at any time (right from the start with one of the characters).
At first it makes time pass to ask for sex, but you can unlock skills to ask for favours that don't make time pass and only cost an action-point. So you can watch the MC getting a blowjob whenever you like if you unlock the skill.
There are also side-contents that unlock other girls. You have to complete their questline, then you have a sex scene and you can repeat them.
By the end of my playthrough I was just walking around with more stamina and action than I needed so I used them just to repeat the sex scenes I liked the most for fun.
Probably my favourite H-game
