Series premieres April 13th. Check out the ANN article for additional cast/staff information. Synopsis from AniList:

Bubbly, energetic first-year high school student Himari falls head over heels for her senpai Yori after hearing her band perform on the first day of school. Himari tells Yori she just loves her, and to Himari’s surprise, Yori says she loves Himari back! But when Himari realizes that she and her senpai are feeling two different kinds of love, she begins to ask herself what “love” really means…