This is a Tic Tac Toe game implemented with JavaFX GUI.
The player will play against an AI that is pre-trained with tree searching. Who goes first is determined randomly.
There is no way to win this AI due to the nature of this game_(:з」∠)_
The two characters are Saigyouji Yuyuko and Yakumo Yukari from Touhou Project, drawn by 桐子 found on Pixiv (so cute!).