A few thoughts.
Haruku is one of my favorite characters in a adult visual novel. Not just cus she's fun, but because of how you jumped to kink immediately with her and expanded on it to a extent many novels struggle with. (Really excited to see what you do with Ayumi given the build up.)
I am surprised the viewers havent been pushing to see things with multiple girls at once. They clearly enjoy drama(i imagine they were very excited that Haruku was watching the Emiko scene) so forcing our Headmaster to manage that would be entertaining.
Though i have to ask... what exactly is the lawsuit that is coming for the Headmaster? It has to be a civil suit since its not being pursued by the police so I don't really know what it could be or why our protagonist cares. Neither him or Emiko are attending that school anymore.