Found a way to get tons of cash super easily ( about +25 000£ per week )
This is pretty dangerous so I'd recommend to know RNG manipulation beforehand. For this you'll need:
- Rank S in History
- Rank B+ or more in Skullduggery
- Rank S in Seduction and High Beauty
- Rang B+ or higher in Swimming
- 4 Exhibitionism and 5 Promiscuity at least
You will alternate between stealing in Danube Street and going at the Lake to fish treasures. You can do whatever you want during the Day but don't use too much energy. During the Evening ( 18:00 or 6pm ), go to the Lake ( if you're in a School day, you can do it even earlier but escape before 8pm ) and search for treasures in the water. I recommend you to save while you're on the screen where you can 'go to the surface', 'check pots' and the last option with the hidden chamber. Check pots, and if you don't see any pots after 4 screens, reload your game, check in the chamber, leave immediately, and check the pots again. Systematically open every pot you encounter, don't take any, you'll take the ivory box anyway. Do this until your stress bar turns to a darker blue ( to Tense, I think ) and leave the Forest using the hidden passage. Do whatever you want but go to sleep at 9pm / 10pm and sleep 'till 3am. Go outside naked ( you can wear the Skullduggery mask if you want to reduce your crime ) and go to Danube Street. If you get caught on your way, reload your save and check the mirror before saving again and leaving for Danube again. You'll manipulate RNG this way. Save at Danube Street and steal, steal, steal, 'till about 5:30am where you'll go to sleep. If you get caught in an event you don't like, restart the save and either: go to the sewers and go back in Danube/Go in another Street and go back to Danube. You'll sometimes get an event in which 4 persons go down in a basement, and you can engage a gangbang here. This is where RNG manipulation comes in. Choose the 'dangerous' option and if they don't give you a price, reload the save and avoid this event. If they do give you a price, choose 400£ and once in the gangbang, try to steal from their pockets.
This method doesn't hinder much gameplay ( and is even do-able during school days ), and you can make much higher gains if you mix in dates with Avery, shows at the Brothel, roaming in the Street and whoring yourself out/ getting money from dogs, stealing during sex battles, eavedropping in Strip Club, etc.
If your Science and English levels are at S, you can completely avoid payments from Bailey too. Simply refuse, fight, apologise while stroking them and sucking their nipples. This way, you won't even lose money.
However it'll take you roughly 100+ days to get the Millionaire Feat. I'm 300 days in and I started this method 30 days ago, I went from 200 000£ to 370 000£.