Let's analyze this for a moment, will you?
You get paid for commissions like many other teams, you also release a lot of stuff for free.
Doujin-Moe on the other hand takes scans that do not belong to them, translates more books than you (no kidding, they have like ten times your workforce), and keep half the content to themselves behind a paywall, half the content open to the public at their own discretion.
Who was exactly that threatened to sue you? It couldn't have been "the association of Japanese pornmakers", makes no sense. Linda sends DMCA but you never worked on their stuff. Who?
EDIT: For those still reading this thread, "Who" is the publisher "Wani".