Sssooooo... i got the credits when I didnt knock.. so i have to knock to continue the route when the next Mikko update cones out?

I'm a little confused. I'm pretty sure that the Mikko ending where you get the option to knock on his door is the "good" one and where it continues from and whatnot, but there are credits after that..? Are there just more credit-y credits on the "bad" end, or is that really where it continues from?