(Beast taming / spirit summoning / familiars + competitions + invincible protagonist + multiple female leads, no major landmines and as little angst as possible. Don't read if that's not your thing.)
Lin Lan was reborn in a spirit-taming world, but he couldn't form contracts with familiars like everyone else.
He should have faded into obscurity and become an ordinary trainer.
Instead, he is always surrounded by powerful, graceful, human-like female familiars and female spirit tamers, each with her own unique style.
Wu Yinglin Ji: "I should be competing alongside my big brother this time!"
Yunhai Jiao Ji: "Xiao Lan, why don't you take a break..."
Shu Yurui: "You're taking advantage of your big sister's indulgence and bullying her like this..."
Ruan Shitong: "But I was the one who came first..."
(The above is dialogue from the competition. I'm not good at writing blurbs. I'm a new author, and I hope you enjoy the story.)