Board Thread:General Discussion/@comment-4899546-20151001152842/@comment-26091912-20151003125656

I don't think Shunsui's Bankai would involve "adult games" (if there's even such a thing), but would include games like Hide-and-Seek, Do This. Do That., Ring Around the Rosie, etc. Or maybe, his Bankai lets him make his games 'more real', by, maybe say... alter and manipulate his surroundings.

Based on what Ukitake said, Shunsui shouldn't use his Bankai where "others can see". Now, I don't think he implied that it looks scary or something, but that it shouldn't be used because it could affect the people in the surrounding area. Maybe that's why Shunsui told Nanao to tell the others to go on ahead.