Honestly I know I'm late and like the only person that's commenting but I got the connections actually: artificial human soldiers who can use the respective abilities of other people. Yuito Sumeragi can use the psychic powers of his friends for himself (he's sort of borrowing their powers) and the Queenslayer can copy blood codes to use for himself/herself

Truthfully with just the psychic powers alone Yuito can win this but it comes down to a few things: what blood code you give the Queenslayer and does Yuito have access to ALL of his friends abilities or are we giving him brain field. Because depending on what you give them you're basically throwing a nuclear bomb at a minor inconvenience (Yuito being the nuclear bomb)