Friendly Blonding is a linear adult visual novel focused on the themes of netorare (or cheating) and moral degeneration (or corruption). It it a short story told from both the male protagonist's and his girlfriend's perspective.

Marcus would like for his girlfriend Kate to dye her hair blonde, but she doesn't seem interested. Luckily the protagonist's friend Lucas is willing to help convince her, but can he really be trusted with your girlfriend?