Lord Yama, Don’t Stand in the Way of My Reincarnation

【Two male leads + devoted to each other + younger love interest + angst before sweetness + a desperate chase for his lover + happy ending】 Shen Niansheng used to love his junior, Yan Zhihuan, dearly. Yan Zhihuan: You loved me just so you could set me up? Shen Niansheng said nothing, only nodded. Yan Zhihuan said he hated him. Fine, let him hate him. What else could he do? Then Yan Zhihuan slept with him and called him shameless. Fine by him, too. As long as he could be sent off to reincarnate, anything was acceptable. So you can reincarnate once you've slept with someone? You should've said so sooner. Bye-bye, then! Yan Zhihuan was consumed with regret. He searched all three realms, kneeling and begging for forgiveness. Shen Niansheng: Thanks, but I can't love you anymore. I can at least stay out of your way. Yan Zhihuan: Then I'll stop being King of the Underworld and come after you every day. Shen Niansheng: ... A possessive King of the Underworld who'll do anything to win his lover back. A clear-headed immortal who has given up on love and just wants to lie flat. The angst early on will make your heart ache; the later reckoning will burn him to his feet. He burned through three thousand merits for you, and you used him up completely.