My Sweet Tyrant (2018)

S1E3 Number of Chews

Akkun confesses to his little sister Chiho Kagari that he’s meticulously tracked Nontan’s eating patterns—down to the average number of chews she takes per bite. Chiho is thoroughly creeped out by her brother’s obsessive behavior, yet she can’t help being equally infatuated with Nontan. She eagerly plays the gracious host, all while carefully concealing her own hidden feelings.