Isekai Tensei Shitato Omottara Sassoku Dorei Auction he Syuppin Sareteshimaimashita

There's no tragic hero here!! This soft and fluffy yaoi manga is about a prince and a reincarnated man who becomes a slave.
Shuya Suwa (31) was on his way to a drinking party when he helped an old lady to cross the street and got hit by a truck.
(Source: Renta!)