Re: [3D, ADV] [Robi] ライジングプレイ / WRITHING PLAY Ver.1.13 + ライジングプレイ追加キャラクター「日南かつは」 / WRITHING PLAY Addon Character: Katsuha Hinami
for the mouse problem, go to the relevant game folder (32 or 64 bit), go to writhingplay_Data-> Streaming Assets and delete the _save file found there.
Not my fix...