At least one of the heroines of this visual novel is already committed to a romantic relationship as the story starts, or does so at the very early stages of the story. Do not use this tag for relationship with the protagonist (useg880 in such case), only for relationships with other characters.

During her route she may break up with her current partner and get together with the protagonist. However, she may also stay in her current relationship - then the protagonist may become her lover, or they can just stay as friends.