I thought exactly the same. it's just so off-putting (?) but I really like the characters and how they all are obsessive and intense.
Its cuz they havent connected mind body and soul AND heart. If you check author's previous work Full Volume, the sex scenes work when the peepo are obsessed with each other.
The sex scene weve witnessed here was mindlessly intense but it lacks passion and love. Its an intense need to treat an animalistic aching, its focused on mating and populating, not sensuality and the need to pleasure a beloved and reach orgasm together. Basically: mindless, animalistic and still needs a lil cooking between god and his sacrifice (づ￣ ³￣)づ
I find the sex scenes extremely sexless in a weird way. Idk why, I do find the characters hot when they're serious or intense about something, but when they're naked and fucking, it's like watching a piece of ham being slapped around. Guess it's either the art style or how they're both extremely muscular yet hairless haha.