Yūki Haruna

(結木はるな) is one of the main characters of Eternal Warrior. Haruna is Kiseki's best friend who is pretty reserved but can be open and upbeat, having a mostly positive personality. However, she is oblivious to the fact of Kiseki being a magical girl.

In episode 42, she gets turned evil by Yamizora and transforms into Eternal Soleil (エターナルソレイユ), the warrior of the dark sun whose theme colour is orange.

Personality
Haruna is Kiseki's best friend who is pretty reserved but can be open and upbeat, having a mostly positive personality. However, she is oblivious to the fact of Kiseki being a magical girl. She is also very caring towards Kiseki.

As Eternal Soleil, she becomes sinister and abrasive, willing to destroy anything that gets in her way. Despite this, she appears to still have her caring nature when sacrificing herself to protect Rêve from her Yamizora's attack.

Eternal Soleil
'''The Warrior of Eternal Darkness! Eternal Soleil!' エターナルソレイユ Eien no yami no senshi! Etānarusoreiyu!''