Nisekoi: False Love Season 2

ニセコイ:

Raku Ichijō's fake relationship with Chitoge Kirisaki continues into a new school term, but the circle of girls claiming to hold the key to his childhood locket keeps growing. Marika Tachibana doubles down on her advances, transfer student Kosaki Onodera's younger sister Haru arrives suspicious of Raku's intentions, and Chitoge begins wrestling with the possibility that her feelings for Raku have become real. The pretend couple's act grows harder to maintain as each key-holder edges closer to the truth.