I figured out my my issue was triggering secret ending B the day after bathroom scene on Melvins route when the guys walk in on them in the men's bathroom without having to go through the Sato route as the guide was saying.
What I don't understand is even starting the sato route to free roam tigger B and then going out for with Sato and the the
melvin route to get free roaming after melvin trigger point A and I'm still getting the secret trigger B happening i'm very confused at how to no have this event happen