Upon hearing that my junior Shinji had moved, I visited to give him a housewarming gift, only to be shocked when I encountered his older sister, Ichika. Learning that Shinji was living together with his sister, I couldn't help but feel envious as my eyes were drawn to her tall, voluptuous figure—her big tits, big ass, and lush, sexy body. However, I never expected this older sister to start seducing me so aggressively. Captivated by Ichika's overwhelming charm, the situation unfolds into the beginning of an unexpected romance.