Disclaimer: I do not own My Hero Academia or Superman, all rights go to their respective owners.
Inko Midoriya, a widowed housewife was mourning, her husband had died months ago but she had nothing to live for, she had even thought about committing suicide, something she despised before Hisashi, her husband's death, she had decided to visit her parents in their countryside farm a month before to keep her mind off of her husband as he wouldn't have wanted her to mourn for so long, she had started stress eating since his death which destroyed her hourglass figure, people have even went so far as to ask her if she was pregnant with Hisashi's baby as the weight she put on was very sudden and shocking, to which she replied "I don't know, I hope so" as she tried to hide her insecurities about her newly gained weight, she had even gone back to her habit of muttering incessantly at random intervals, which she used to do when she was younger. Suddenly, Inko heard a loud noise, it sounded like something breaking the sound barrier, as she thought to herself 'what could it be? this is the countryside there shouldn't be any jets or planes capable of breaking the sound barrier' as she looked up she saw a barely visible round object falling to the earth a few hundred meters in front of her, 'my god is that a meteorite?' she thought, as Inko approached she saw it slow down just before landing, the space pod suddenly opened a black haired baby with green highlights started crying, which awoke Inko's motherly instincts, she ran straight to the baby comforting it "You poor thing, why were you in a spaceship type object?" "Did the government experiment on human babies?" as Inko said this a hologram showing Jor-El and Lara "To whoever finds our baby Izuku, please take care of him, we are unable to, we wish we could but if this message has been found we are already dead due to the destruction of our home planet Krypton, our son will have powers unseen by any mortal, he will be confused and more likely than not terrified of these powers, but please, and I repeat please, take care of him, show him a parents love, a parents affection, something we can no longer give". Inko was in complete shock, this child she was holding was from an orphan from a completely different planet? He looked no different from any other children, other than how cute he was, 'he will definitely be a lady-killer when he grows up' as Inko thought about this the baby opened his bright eyes once more and looked up at Inko with love, 'Oh my god, he looks so much like Hisashi, and those green highlights, he looks like he could have been our child!' as Inko thought about this she decided to make use of peoples assumptions of her being pregnant and pass him off as their child, born months after the death of her husband. Izuku suddenly started crying, probably realizing he can't find his parents anywhere. 'he seems very intelligent, I've got to comfort him somehow,' as she thought of this she smelled something terrible and realized what Izuku had just done, 'but first lets get Izuku cleaned up, Izuku Midoriya, it sounds like a great name.'
Izuku's space pod wasn't found by any type of technology due to the stealth system attached to it, and any rumors were just ignored due to the amount of fake UFO sightings in the media.