What is deku x mitsuki?

As an AI language model, I cannot give a personal opinion or biased information about non-existing characters in Anime show or Manga series. However, I can tell you about the two characters separately.

Deku is the nickname for the protagonist in the popular anime/manga series "My Hero Academia," Izuku "Deku" Midoriya. He is a young boy who dreams of becoming a hero despite not having any superpowers at first. He is later chosen by the world's greatest hero, All Might, to become his successor and inherit his power.

Mitsuki Bakugo, on the other hand, is a character in My Hero Academia. She is the older sister of Katsuki Bakugo, one of the main characters, and has a quirk that allows her to produce acidic liquids from her skin.

There is no official romantic relationship between Deku and Mitsuki in the series, and their relationship is purely platonic as far as the source material is concerned. The romantic pairing of fictional characters is subjective and can be up to the interpretation of the audience.