Why was this 10/10?
It wasn't. Not even close.
Because MOU II KAI.
Because it wasn't, it was an 8/10 at most. Those last 3 episodes dragged on forever.
Because it spent eleven and a half episodes building dramatic tension and moving towards catharsis, only to run all of that potential onto the rocks with 15 minutes of characters screaming and yelling Menma's name.