A male with white hair and rainbow-colored streaks. He has heterochromia, with a green left eye and a blue right eye. He wears a hairclip with two triangles side-by-side. His birthday is August 4th. Blood type O, MBTI is ENTP. He likes the piano and blankets. His representative color is light blue, and his fan mark is 💫🎨. He is often called by nicknames like Relu-chi or Relu-kun. An Utaite who debuted in 2019 and is currently a member of StarPola. Usually, he uploads 'Utattemita' (song covers) and original songs on YouTube, or hosts chat, singing, or piano streams on TwitCasting. While he looks like a 'shota' character, he plays the role of a tsundere and a genius. He refers to himself in the third person. He can compose and write lyrics. He also mixes songs for StarPola members and creates original tracks. He mentioned being born with a weak constitution, though he is relatively healthy now. He enjoys bickering and playing around with his listeners. He believed he could become a wizard until he was in the 5th grade of elementary school. He has a habit of composing music in his dreams. He has an older brother. He was in the light music club. He is not very good at English. If he were to compare himself to an animal, he says he'd be a cat. He is very expressive with his emotions. He is a hikikomori. In StarPola's first original song 'First Star,' there is a solo line by Relu: 'I don't need things like suffering anymore, I'll prove my existence through music.' He shared that as a hikikomori (someone who stays home and rarely goes out), he is graduating because he found something he truly wants to do, and asked for support. He also active as a Vocaloid P (composer). He creates StarPola's original songs himself; while his range is wide enough to include bright and energetic tracks, his lyrics mostly focus on providing comfort and empathy.