Mizu no Akashi (Midori no Hibi)
Hateshinaku Tooi Sora ni & Arigatou (Kyou Kara Maou)
Freckles, english version. (Rurouni Kenshin)
Scarlet (Ayashi no Ceres)
Jasmine & Moment (Gundam Seed)
Butterfly Kiss, Higher and Higher & Kohaku no Yurikago (Rave)
Daijoubu & Minna ga li ne (Boys Be)

Honestly, there're so many more. Above stated are favourites in my phone. XD