My Backer Is Black Impermanence

Modern setting + supernatural abilities + golden finger + two male leads + one-on-one romance + slow burn + older love interest

Very little romance, so a heads-up for anyone looking for a sweet love story.

The proper synopsis

The arrival of evil spirits threw the world into chaos. The intervention of elves gave humanity a chance to catch its breath. Elves can take countless forms: flowers, birds, insects, and fish can all be elves. Humans who gain the power of elves are called Spirit Users, and the act of summoning them is called “Spirit Invocation.”

The not-so-reliable synopsis

In his first life, Min Nanluo was run over and killed for catching a glimpse of Black Impermanence. Thanks to a favor from Black Impermanence, he was reincarnated. Now, having entered the world of Spirit Users at seventeen, what kind of life will Min Nanluo lead in his second life? Stay tuned!

I wanted to use Spirit Invocation as the title, but someone already took it.

(I really have no idea how to write a synopsis.)