It's also a small suggestive that Leonard's mom is a fewer neurotic female Sheldon. Both of the key woman people on School Days healthy this trope to a T. Depending on the ending, Makoto, the main character, can be stabbed and killed by Sekai, Sekai herself may be killed by the inadequate Kotonoha, or Kotonoha might be Driven to Suicide even though destroying Makoto and Sekai's relationship.