Maou ni Natta node, Dungeon Tsukutte Jingai Musume to Honobono suru - Vol. 9 Ch. 58.1

[Kaarme]

"For the sake of aspiration / so we can aspire."

That feels like the kind of line that should probably be revised after it's translated because it might be the literal translation of how things are said in Japanese but it sounds incredibly clunky in English.

They aspire to build the best naturally aspirated engine for the needs of the demon realm.