When the planet Brigadoon appears in the sky, Marin is attacked by weird mecha called Monomakia. In an old shrine, she finds an ampoule that contains Melan, an angular blue mecha who swears to defend her.

• Ayaka Saito
• Hikaru Midorikawa
• Yuji Takada
• Rikako Aikawa
• Hochu Otsuka
• Mayumi Shintani