Google Translate (Some parts were edited):

Qianjing Chikage (Xiaogan), a gardener, was hired to live and work in the house of his junior in high school, Ryuji (Sun Lung). Despite what Ryuji says, Chikage feels that their reunion was not coincidental, Moreover, they were dating when they were students...

Chikage, who started working and although he is confused, he feels attached to Keiichiro, Ryuji's only son, for some reason. Unlike Ryuji, Chikage manages to continue working while being healed by Huiichiro, who is too honest and nice. One day, Ryuji made a ridiculous proposal with him...!?

"If you become Huiichiro's other father, I'll make you happy at night, what about it? "

This buzz in my chest is a warning...!
A secret love between a sadistic daddy x a muscular gardener who is obedient to pleasure!!!

(The names are according to the fan translation.)