星際第一育兒師 The First Parenting Teacher in the World--> MC had an amnesia but his father(school principal) 'adopted' him(he knows MC was his son) and MC became a teacher. MC met his students (ML's nephew whose parents died) and ML who is his guardian. ML found out that his missing fiance was MC but MC can't remember him. Soon ML treat MC gentlemanly and MC fell for ML and his nephew even though both are tsundere. ML was the newly throned king and married MC as his wife. Nephew likes MC very much and treat MC's children as his younger siblings. He takes care as oldest brother. MC also likes nephew to call him mom. They treat him as their son. ML give the throne to nephew after he grew up. 

怀崽后我被豪门霸总宠上天［穿书] After I was pregnant with a baby, I was doted on by the wealthy boss [Transmigration]--> MC transmigrated and had s*x with ML. ML is 30 while MC is 18. ML likes to make love to poor MC that he hire him as his nurse. MC got pregnant unexpectedly but ML has trauma to babies. MC ran away but ML chase him. ML went to therapy and MC gave birth at end.