Alternative:
남주의 입양딸이 되었습니다; The Male Lead's Little Lion Daughter; Namjueui Ib-yangddal-i Doeeosseubnida; اصبحت ابنة البطل المتبناة; Duke Mengadopsi Putri Singa; 主人公の養女になりました; 成为男主的养女; 成為男主的養女
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"I'm going to adopt a child." Duke Phileo Boleoti's impulsive decision shocked everyone in the mansion. Not only did he make her his daughter, but he also gave her the name of a 'beast' that only direct members of the bloodline could receive. "Even as you breathe right now, I'm earning money." "It's confidence, not arrogance." "My face really does have its advantages." The most arrogant father in the whole world, and- "I love muscles the most. Let's get muscular." "Show me your thigh muscles! Your butt would be even better!" "You're nothing but a flower if you have a calm personality…" his corrupted(?) daughter. And… "I will give his excellency the information he wants most." "Information I want most, you say…" "You won’t regret it." …A stepmother(?) with a strange secret as well.