OK, found this on reddit.
BaD Affinity compatibility table (Updated for Episode 9)
GIRL | CHICK | NEUTRAL | DIK |
---|
Jill | Optimal | Compatible | Incompatible |
Josy* | Compatible | Optimal | 3 Chick choices before Library scene. |
Maya* | Optimal | Compatible | 3 Chick choices before Library scene. |
Sage | Compatible | Compatible | Optimal |
Bella | Optimal | Compatible | Compatible |
Quinn* | Incompatible | Need to pass DIK Affinity Check in Episode 6. | Optimal |
Melanie | Incompatible | Incompatible | Optimal |
Sarah | Incompatible | Incompatible | Optimal |
Heather | Incompatible | Incompatible | Optimal |
Lily* | Compatible | Compatible | Optimal |
Nicole | Compatible | Compatible | Compatible |
Riona | Compatible | Compatible | Compatible |
Camilla | Compatible | Compatible | Optimal |
Jade | Compatible | Compatible | Compatible |
Nora | Compatible | Compatible | Compatible |
Cathy | Compatible | Compatible | Compatible |
Rose | Incompatible | Compatible | Compatible |
Sandy | Compatible | Compatible | Optimal |
Madame | Compatible | Compatible | Compatible |
Becky | Incompatible | Incompatible | Optimal |
- Compatible = Can get all some of their lewds, and be on their path if there is one.
- Incompatible = Could get some lewds or none at all, but can't stay on their path at some point.
- Optimal = Compatible + Some exclusive bonus content.
Lily = Chick and Neutral affinities can get her EP5 Lewd for free, DIK cannot. EP7 Lewd requires either DIK or to have had EP5 Lewd. EP8 Lewd requires to have had EP7 Lewd.
Throuple = You can make a maximum of 4 Chick/Neutral Major choices if you want to achieve permanent DIK affinity... you need to be non-DIK affinity by the end of Episode 4 to convince Josy and Maya to accept the throuple idea. That requires that you make
at least 3 Chick choices before that scene. The 4th choice can be taken after you're on the Throuple path. So at the end of Episode 8, you'll be permanent DIK Affinity and on the Throuple Branch.
Quinn = In order to achieve Quinn's path with Neutral permanent affinity, you need to pass the DIK affinity check during Episode 6 (where you help her after she got mugged). it's entirely possible to achieve this by having made no more than 4 Chick choices until that moment...