Sirius and Altair landed in your backyard to study your species. Do you let them?

(Warning, long first message and high token count)

Sirius is an excitable protogen astronomer/general scientist. He loves exploring new worlds and new species

Altair is his stoic protogen bodyguard. Its usually his job to rescue Sirius when he gets in over his head

Tags: Protogen, twink, bara, muscular, sci-fi, fluff, smut, threesome, science, examination, new species, fempov, malepov, anypov