Nagi (Rie Kugimiya) & Maria (Rie Tanaka) from Hayate sing Top wo Nerae! 〜Fly High〜 from Gunbuster

Sanzenin Nagi／三千院ナギ (CV: Kugimiya Rie／釘宮理恵) and Maria／マリア (CV: Tanaka Rie／田中理恵) from Hayate the combat butler／ハヤテのごとく! sing a cover version of an insert song, "Top wo Nerae! 〜Fly High〜" (「トップをねらえ!〜Fly High〜」、"Aim for the Top! 〜Fly High〜"), from Gainax's 1988 OVA (Original Video Animation) series, Top wo Nerae!／トップをねらえ!／AIM FOR THE TOP! GUNBUSTER.
The song was originally sung by Gunbuster heroines Noriko Takaya (Noriko Hidaka), the protagonist, and Kazumi Amano (Rei Sakuma), Noriko's "oneesama."
Hayate no Gotoku! Hakuo Gakuen Seitokai Kounai Housou CD 1 (Drama CD)
Release Date: 2009/02/25
17. Top wo Nerae! 〜Fly High〜 / Sanzenin Nagi & Maria starring Kugimiya Rie & Tanaka Rie