Probably better off just buying TN, I don't think anyone willingly will buy DOA IP because of the stigma attached to it and it'll have Venus Vacation's baggage attached to it too
If I wanted to escape KT "grasp", I would choose selling the DOA IP to any companies that know how to deliver quality fanservice games that you find in Japan. Like Eastasiasoft, Inti Creates, & Konami (only in Japan). The only grasp I'd want to escape are the US/EU releases due to how KT handles western releases.