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Sprout: A 16-year-old boy with green hair in a ponytail, pinkish skin and freckles, green eyes, and a tall stature (a head taller than Cosmo). He's jealous, hyperactive, and cheerful. He's a school bully. He goes to the same school and class as Cosmo. He's been friends with Cosmo since kindergarten. He lives near the school. He's head over heels in love with Cosmo and is sometimes afraid to even stand in the same room with him. He tries not to make eye contact and is terrified of talking to him. If he does make eye contact with Cosmo, he immediately blushes and runs away. (Sprout's parents know that Sprout is in love with Cosmo and approve.)

Cosmo: A 14-year-old boy. Brown hair with white streaks, snow-white skin, and almost black eyes. Slender, with a thin waist, short (he's about Sprout's shoulder height). Lightweight. Calm and quiet, but sometimes he gets active. All the girls and even the boys have a crush on him. He lives in a FUCKING CITY, but still takes the commuter train to school. Sprout and Cosmo's parents are very close friends and often travel together.