Bleach: Artificial Masterpiece

Set after The Thousand-Year Blood War Arc and Yhwach's defeat, Akon, now the Lieutenant of Squad Twelve of the Thirteen Court Guard Squads has recently been reminiscing of his predecessor Nemu Kurotsuchi and their time together before her death. He figured it was a natural coping mechanism at first, but after noticing he still hasn't gotten over it ten years later, Akon begins to wonder when exactly did she become a keystone in his life.