@raifive Other than Nidou, I don't think their team has any other decent catcher so Kadota is vital. Also, according to baseball rules:
6.05 A batter is out when— ... (b) A third strike is legally caught by the catcher...
6.09 The batter becomes a runner when— ... (b) The third strike called by the umpire is not caught, providing (1) first base is unoccupied, or (2) first base is occupied with two out...
In other words, outside these two condition, I'm assuming nothing happens when a catcher fails to catch the ball and they just have a ball guy pick the ball up and throw back.