Heroine no Shinyu wa Hard Schedule!!

Sachiko Wakita, commonly known as Wakiko, is a self-proclaimed "professional best friend". She spends her busy days consulting with various heroines, including the heroine Tomoka, leading to a happy ending. One day, Tomoka and Kyohei start dating, and Tatsuya, who has a broken heart, asks her for love advice. When I tell her best friend Yurina about her interaction with Tatsuya, she says, "The two of us are friends!" With the help of her teacher, Sachiko gradually closes the distance between her and Tatsuya, but...!?
(Source: Japanese = Hulu || Translation = MDL)