Sora

Sora is the biological mother of Takuto. [Spoiler] Sora was engaged to Ryousuke but later fell in love with Tokio. She let Tokio paint her in her most beautiful form, i.e. naked. [/Spoiler] [Spoiler] It is later revealed that Sora is pregnant with Tokio's child. However, at this moment, Tokio is engrossed with zero-time and doesn't not pay much attention to Sora. When Ryousuke tells her this, he gives Sora his pocket watch. Soon after, Sora leaves the island. [/Spoiler]