Glad you liked the update! To get the new CG, you need to pass the C-rank exam first and get 'Kissing Magic+' from Ume. Once you use it on the school nurse and level her up, the CG will be unlocked.
Ume is the sucubus in the black dress right? Because she only sell me advanced information gathering charming and common sense magic edit: nvm i found out that I needed to click on Z on the nurse to change from dressing to talking or kissing
