Diary of a Female Lead: Shujinkou Nikki Vol 9

From the Seven Seas Entertainment edition

ALL THE WAY?! Aoi and Sena are ready to take a big, big step forward in their relationship—some would say the biggest step. Naturally Aoi is anxious, but her feelings for Sena propel her forward and give her courage. On the sidelines, Koto sees Aoi taking charge and is inspired to come to terms with her own feelings for Itsuki, which have kept growing. But Itsuki and Aoi soon face a totally different challenge when their father returns home from abroad! What will Aoi’s father think of Sena?

Source: Penguin Random House API