Yamaceles

Yamaceles is a het ship between Hifumi Yamada and Celestia Ludenberg in the Danganronpa series.

Canon
''' WARNING: This section contains heavy spoilers for Danganronpa 1. '''

Hifumi regards Celestia highly, even referring to her as "Mistress", and following every one of her orders. Despite the fact the first major seen interaction between the two resulted in Celestia smashing a cup of tea in anger and berating Hifumi harshly for preparing it incorrectly.

He seems to be extremely protective over Celestia (or just has a strong sense of justice) as shown after she lies to him about being assaulted by Kiyotaka Ishimaru, he is willing to kill Kiyotaka for such a thing.

In many pieces of official art, Celestia is shown to be sitting on top of Hifumi, literally using him as a chair, solidifying their relationship as him simply being used.

Shortly after Hifumi and Celestia's deaths, Makoto Naegi along with the remaining students discover a picture of Hifumi, Celestia, and Sayaka in Hope's Peak Academy before the Killing School Life and The Tragedy began. In the picture Celestia is angrily holding onto Hifumi for stealing her fake eyelashes as Sayaka laughs, however it doesn't seem to be any sort of threatening anger, and Hifumi seems more amused than afraid. This could indicate their previous relationship was a more friendly one, and not the cruel bullying one they have in the Killing School Life.