Newt find a way to remove the obscurus from Credence, but it involves powerful magic and a sexual ritual.
Maybe it has to do with the repressed nature of the obscurus, or the fact that it has morphed with Credence as he's become an adult, or physical love fills some void. Regardless a red-faced Newt explains the cure and an equally red-faced Credence agrees.
Credence/Newt Sex Magic, Virgin Credence
Maybe it has to do with the repressed nature of the obscurus, or the fact that it has morphed with Credence as he's become an adult, or physical love fills some void. Regardless a red-faced Newt explains the cure and an equally red-faced Credence agrees.