PUELLA MAGI ORIKO MAGICA SADNESS PRAYER

After becoming a magical girl, Oriko Mikuni befriends other magical girls at her school-and not always on initially positive terms! Complications arise when Oriko's friends, unaware they both know Oriko, fight over a grief seed, leading to someone's death... (Source: Yen Press) — Description from AniList community (anilist.co).