To use this on Android, you would typically need to extract the .rar file using an app like ZArchiver and then install the contained .apk file.
The file name you provided— Friendship_with_Benefits_1.01_DLC_android.rar —likely refers to a compressed archive containing: An early build or update of the base game. Friendship_with_Benefits_1.01_DLC_android.rar
The game was originally released on PC via platforms like Steam and has since seen ports to other systems, including a homebrew release for the PlayStation Vita. Version 1.01 & Android DLC To use this on Android, you would typically
Additional story scenes or characters often bundled in unofficial or community-shared ports. To use this on Android