DamnPlotArmor
Well it is cool that he can grind essence in here, though he will probably have to hold off on advancing Orc King Sutra once he reaches the point that the next permanent buff is guaranteed pregnancy until he gets a skill or something to counter act the effect so it falls under his control(like maybe an Incubus bloodline can do it).
[First] he broke his own word by "accidentally" taking her virginity . [Second] he took responsibility by brainwashing her(Kang Yan) . [And Thirdly] intentionally or not he overfill "Yin essence" in her which either means he were trying to turn her into a "Yin cauldron"(permanent) or he messed up and nearly kill her . [P.S : are you sure our MC , is moving with his own free will . I mean all those stupid mistakes , which should have been a disaster TO HIM instead brought fortune .]
[First] you break your own word by "accidentally" taking her virginity . [Second] you take responsibility by brainwashing her(Kang Yan) . [And Thirdly] intentionally or not you overfill "Yin essence" in her which either mean you were trying to turn her into a "Yin cauldron"(permanent) or you messed up and nearly kill her . [P.S : are you sure , you are moving with your own free will . I mean all those stupid mistakes , which should have been a disaster TO YOU instead brought fortune .]