He belongs to me

Rui, an 18-year-old high schooler from a well-known family, decides to start her own diary after reading her brother Ren and sister-in-law Aria diary. She can’t help but write about her longtime crush, Evok, a charming classmate who doesn’t return her feelings. What begins as teasing, bickering, and awkward encounters slowly turns into something neither of them expected.