We Never Learn (2019)

S1E4 What She Wants from a Genius Is X

After experiencing an unexpected weight gain, Fumino is resolved to start a diet. Meanwhile, Rizu's self-styled rival, Sawako Sekijo, mistakenly believes that Rizu is pursuing humanities out of romantic feelings for Nariyuki. In an effort to uncover the truth, she sets out to challenge Rizu's supposed "love" for him.