Shin attempts to flirt with Momoko on a regular basis, only to be endlessly declined and beaten up for it, leading to a relationship that is negative. In his inner monologue, Shin states that he believes Momoko has horrible taste in men due to being attracted to Hajime Sugoroku and that he finds Japanese women to be unusual, at one point even wonders if she had any girly traits in her at all.
However, they are known to be capable to be serious when the situation truly calls for it. They both share this trait and take their job very seriously, especially when it involves the World Administration Authority.
Momoko is also the first and only known woman to have uppercut Shin Sauzando.
Dread is Shin's subordinate and he treats them akin to a pet, but also as a person that he cares for, mutually respects and has a deep and emotional relationship with.
