If It's for My Daughter, I'd Even Defeat a Demon Lord

The skilled young adventurer, Dale, at last returns to his base of operations in the town of Kreuz after the long journey he took with his adopted daughter, the devil girl Latina. He feels a brief moment of relief when as he watches Latina greet Kenneth and Rita with a smile and start handing out souvenirs... but wait, what's Helmine doing here? With the beautiful woman with a deep history with Dale visiting the Dancing Ocelot, a clear change appears in Latina. Latina... really does wish she could hurry up and become an adult..."

I've never thought of you as a replacement for my father. After Latina tells him about her real feelings on the night of the Ahmar festival, Dale is driven into a deep depression by his beloved daughter's "rebellious phase." It takes a talk with his "big bro" Kenneth for him to see what her words really mean... but how will he respond? To make matters even more complicated, Latina receives a confession of love from Rudolph, her childhood friend. Love is hard, but this is getting out of hand! Whatever happens, though, one thing is sure: the relationship between guardian and adoptive daughter is going to change in a big way, and there's no turning back.

Everything seems to be finally coming together for Latina and Dale. They live in a place where they feel like they belong, they're surrounded by people they love, and Dale has finally asked for Latina's hand in marriage. Before long, though, the devil girl realizes what being the Eighth Demon Lord means: the other demon lords will stop at nothing to destroy her, and that will put everything she holds dear in peril as well. And to prevent that, Latina decides she must sacrifice herself. However, as a first-rate hero and Latina's retainer, Dale won't let that happen, and he sets out to do what he must: eliminate the seven demon lords.