Iceberg Girl, Doesn't Want to Be the Filling in a Sandwich

As the youngest sister of the Hikawa family, Hikawa Tsukika faces two older sisters, one hardworking and the other a prodigy. Her sisters' care for her ultimately leads her to choose the "laissez-faire" approach. She initially thought she could just coast along, but then she encounters many girls who change her life: a small animal she met in kindergarten who likes to give her stones, a rich girl she met in middle school who is her "white moonlight," the daughter of a cucumber-flavored superstar, an elegant bass violinist who is like a mother, a vain pink-haired guitarist, and... that seemingly unapproachable but actually incredibly soft long-haired black drummer, and a wildcat-like white cat guitarist. But... can someone explain why she's sandwiched in the middle? When Hikawa Tsukika wakes up in the morning, looking at Ronai and Riki sleeping on either side of her, a question mark pops into her head. ———————————— I'll start writing from the old group, and then switch to Mygo after Mujica starts playing.