So the ML is like one of the 2 statue guardian spirits on a temple and it's been like a long time and it broke down and he's the only one left and he is corrupted while the MC found him and helped him and romance
https://www.mangago.me/read-manga/tsuki_wa_michikake_kemono_no_koi/
OMG A BIT LATE BUT THANK YOU SO MACHHHH
So the ML is like one of the 2 statue guardian spirits on a temple and it's been like a long time and it broke down and he's the only one left and he is corrupted while the MC found him and helped him and romance