I think the circle/authoor may be Chinese, so there may be no Japanese version. If anybody would like to help translate this or other AOKIHOSHI works from Chinese to English, PM me, I can help finding the editor.
OH MY GOD THIS IS SO HOT, ESPECIALLY THE PART WHERE TOUMA EJACULATES HIS SEMEN DEEP INTO MIKOTO'S WOMB! The only thing missing is a cross-section showing his sperm fertilizing her ova. Of course, it's adorable how MISAKA looks dejected or mildly bemused following that.