Ch 1-4: Uke is dying to get laid and orders a rental boyfriend not knowing they don't do sex. Winds up having sex with the young but charismatic rental boyfriend. Does that a few times before they fall in love with very minor hurdles
Ch 5: um guy gets turned on by a waiter boy in an apron, find out that waiter is his kid brothers friend, fucks the friend. Massive age gap, and a minor. At least its consensual?
Ch 6: really short bit with a silly vampire and the guy he bit
4/10?
3-manen no Kareshi