First floor

Eliza's life is never boring it never has and it never will be. But now her life is much more complicated than it used to be. Now she's struggling to balance out her two lives: a sister to thirteen brothers and the assassin and heir of the Yamaguchi clan.

As if that weren't enough now she's meeting the other assassins and they're not too fond of each other.

This is the second book to "I'm not her brothers-conflict"