https://lessthanthreepress.com/books/index.php?main_page=product_bookx_info&cPath=78&products_id=1521
Here's the summary of my story:
Beginnings by Alexa Black—The Finishers are a collective of alien beings that end worlds when "called" to do so. But when they're not ending worlds, they're extremely bored. When the Finishers meet Vana, a strange, small being, they find themselves a bit less bored—and curious about what other beings do when they're not being destroyed. Intrigued, they examine the contents of Vana's mind... and decide they'd like to try humans' version of companionship.