Boxing Girls: Waifu Fighters

This is a casual, likely portrait-oriented fighting game that can be played in short, interruptible sessions, making it suitable for quick bursts of play. It offers standard progression with new fighters and challenges, and appears to be playable offline and one-handed. The game is generally free-to-play with no obvious pay-to-win mechanics, making it a fair option for players looking for a simple way to pass the time.