I don't know yet if cheating will do any good but here is what I have found so far.

It maybe best not to use cheats because it could break your saves.

Some of the cheats work and some get reset to what the game gives you so use as you see fit.
xx= number you want.

Mother
mot_love = xx
mot_lust = xx
mot_corruption = xx

Twin sister.
mor_love = xx
mor_lust = xx
mor_corruption = xx

Younger Sister.
lil_love = xx
lil_lust = xx
lil_corruption = xx

MC

leader_stat = xx
seducer_stat = xx
warrior_stat = xx
lover_stat = xx

There is also these 2 but there set to zero at this time and I have not found a use for them yet, I am still in the beginning of the VN.

coins = xx
royalgem = xx


I will add to these if it is needed.