2 x 2Also known as: 2×2 · 2x2 · 2x2-风云双胞胎 · Two By TwoComedy, Romance, ShounenUu IzumiN/A2 x 2 chapters2 x 2 Chapter 3 - I did not know...2 x 2 Chapter 2 - We Too Are Twins!!2 x 2 Chapter 1 - The Debut of the Twin Transfer Students!!!