It's a genuinely funny headcannon to me, I love these 2 so much they make me so ill...

And when he gets interrogated on it he's like so genuinely confused since he doesn't have any contacts except his father, sister, class 1A and his gf "himi"

To add on to this, i once saw an au where they were in an online relationship and shoto unintentionally became the UA traitor cause he would tell himiko stuff about UA not knowing that she's part of the LOV