I'm glad it didn't turn out that Elisa was a villain.
Now if I remember correctly Reito has to have sex because of hormonal changes in his body, so why does it matter that she is infertile?
Last page says they get it done.
Next chapter's first page says they only embraced each other and MC is still a virgin because his D is dysfunctional or because he actually has a pussy instead of a D.
Trust me, this guy will say no to having sex with elisa because he will feel that it is not right to do it, even though elisa just told him the truth, got herself naked and even got on the bed all ready to do it.
Well that was a pleasant plot twist. I mean the mc actually having sex, not Elisa being sterile. But maybe the author will still find a way to stop it from actually happening.