Tsun Tsun Maid wa Ero Ero Desu is an adult hentai OVA about Eishun Makio, a perverted teenager whose mother hires his tsundere childhood friend Kiriha as his maid to keep him in check. However, Kiriha's strict maid duties take a lewd turn as she dominates their intimate encounters, maintaining control while teasing and engaging with Eishun in a mix of comedy and erotic moments. Their awkward yet passionate relationship develops amid playful power dynamics and erotic tension.