Kazuya and Nana from Daimos

Notes:

Kazuya and Nana are adopted siblings from Daimos. After Kazuya's father was killed at the UN meeting, Shinichiro Izumi took him under his wing. Nana (Shinichiro's granddaughter) has a crush on him, and she calls him onee-chan. She gets jealous when Kazuya falls in love with the beautiful Princess Erika, who turns out to be an alien and the Princess of the Baam.