Despite her best efforts in the succubus transformation tournament to get revenge on the demon who corrupted her master...Tsugumi's corruption eventually reached 800 points...and she became...a true succubus. Revenge disappeared from her mind and she became lustful and grateful to the one who corrupted her master..not to mention wanting to live with her master now. She was truly lost. Her human mind was gone completely...and your corruption was pretty high too so you had to be careful not to get touched by her.

Worse yet...she was on the same tile as you..and she looked hungry at you...and oddly calm.