You shouldn't really use Gurren in blockstrings unless you're trying to frame trap with it. You don't have to just go for a mix up after Kishuu you can just start 2Aing and restart pressure. Also if they expect a throw you can do Kishuu walk forward a little bit, backdash, and 3C CH their their throw whiff. If they use throw OS just do walk forward 2A > chain into throw to TRM them.