Mitsuki Natsume is a fictional character from the anime and manga series Kyoukai no Kanata. She is known for her cheerful personality and strong determination. Mitsuki is a half-human, half-youmu, which gives her unique abilities and challenges. Her character often showcases themes of friendship and self-discovery. In the series, Mitsuki plays a significant role as a supportive friend to the main characters, particularly Akihito Kanbara. She is also a skilled fighter, using her powers to protect those she cares about. Her journey highlights the struggles of balancing her dual nature and finding her place in the world.