Blue Roses: Yousei to Aoi Hitomi no Senshi-tachi

About

A turn-based strategy game genre featuring Rocher and Alicia that live in a world shared by humans and fairies. These two form a group named "Blue Roses" to overcome the mysterious phantom monsters whom specifically target the fairies. The story depends on which of the main protagonists the player choose as their lead character. The game utilize cute 2D cartoon graphics and compelling storylines, though it was only released in Japan

This game also has a manga with the same name.

Source: IGDB