There is a sign that reads "Houkokuji Shojoin" and there is also a light blue flag with "Samurai Theater Tokyo" written on it. Here are the details of access. Please refer to it. https://www.samurai-theater.com/en/access/
You can cancel up to 24 hours in advance of the experience for a full refund.
up to 24 hours before the experience starts (local time)