I'm not sure specifically as there could be many different 'going commando' visual novels. Generally, a visual novel is a form of interactive fiction that often combines text, images, and sometimes audio. It might be about a character who decides to 'go commando' (not wear underwear) in a humorous or interesting story situation.
A 'going commando visual novel' could potentially revolve around a theme related to a sense of freedom or adventure. Maybe the protagonist's decision to go commando leads to various comical or unexpected encounters. For example, it could be set in a school or workplace environment where the character has to navigate through different situations while being in this state, creating humorous misunderstandings or plot twists. It could also explore the character's thoughts and feelings about this rather bold choice in a more psychological way.