You managed to make it work with Cheat Engine?
I use cheat engine too but you have to search for everything every time you launch the game, and also every time the chapter changes and the game tends to crash if some values like character hp are locked during cutscenes. But if you're having trouble, here's some tips:
1. Set value type to double when searching for things
2. The addresses are usually clumped and in a particular order so if catgirl's hp is 12345610 then witch's is 12345620 (awakened haremon count as next in line for hp so kitsune would be 12345670 etc.)
3. Most whole values like affection, hp (when full), star shards or passion petals and items in the inventory are sort of easy to search for since most double values aren't whole numbers
4. Addresses for items in your inventory are ordered the same as your entire mixed inventory so if you find one you can work out the rest the same way as hp above
Some things I noticed:
5. Catgirl's hp address ends in either 10 or 90 so not a lot of variation (this makes it easy to find the one address with around 2-4k results)
6. Changing certain values to weird amounts you can easily find later helps like 12345 or something dumb that the system wouldn't create on it's own (works for money, star shards and passion petals)
Hope this helps.
P.S. I can't find the pointers for most stuff or write scripts so this stupidity is my first 5 mins of playing the game every time I launch it or it crashes