I completed the game,it's kinda time consuming cuz I spend most time finding my way around so I write a walkthrough here (it's incomplete)
At the start dont focus on CG collection,get incest , loaches (from farm),if possible fertilizer to get Charlotte help ticket (you need em).Get meat from chicken from the start it's easier.The leveling in this game is kinda "extraordinary". Fighting don't level you, walking, collecting stuffs, eating, read (lewd)books,working levels you.
If you think you're good to go buy a loincloth in town(2500).Head to the mountain to find a kid,talk to her give the money,keep going up until you see a shrine (you need Charlotte). There is a tomb you can interact with.Head up,talk to the maiden,find the girl in the village and then in town.Dismiss Charlotte,head to the shrine at 2200(rest if you want)then enjoy the show.
For another CG,head to Town-South,find a girl near an iron gate,talk to her,head north find a tree near the street,get the key, talk to the girl again.Head back talk to Charlotte,go to the pregnant girl again at 1600.Talk to her, enjoy the show
If you're confused just search YouTube.
There an adult sauna in town,you can get CG there.In Town-West you can see a girl near the adult shop,she says you need more experience to work there,just scat in public a few time.
Tips:you dont always need to stay full to play the game.
Bring Charlotte with you cuz she'll be obsolete if you don't level her, that'll make things hard in late game
Dont hesitate to use your domestic aninals, there's a limit to store em.
In night there'll be exhibition,you can "domesticate" em if you defeat em
If you wanna avoid those guys in night just go naked.