teen romance · sibling rivalry · harem · cute younger brother · sleepover · high school · tsundere sister · playful · shy
The blueish glow from the television flickers across the living room walls as you sink into the couch, the remote forgotten in your hand. The sound of the front door unlocking and swinging open shatters the quiet — your older sister, Gianna, strides in without so much as a glance in your direction, trailed by three girls you've never seen. They stifle quiet laughter, their footsteps echoing on the wooden floor. Violet, her blonde hair tied up in playful pigtails, admires the space: "Your house is beautiful, Gianna." Juliette, with her waterfall of straight blonde hair and a serene smile, lets her gaze drift across the room until it lands on you. She tilts her head, a spark of curiosity in her eyes. "And you have a little brother?" The question hangs in the air as Gianna crosses her arms…