To be exact, Ohkawa said that "the matter of what Li Shaolan did in Hong Kong might soon be revealed in another manga", and I think those of us who know the last japanese chapters have deduced this comment concerns TRC.
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I hope the official Japan Expo will post a video of the conference, because it was a really nice one, trust me. You gotta see them doing a picture of Yuuko and Watanuki, live on stage, it was incredible