(Thanks to Stan and Kirin-kun for doing some legwork on this.) One thing that's really cool about this is the cast of people behind it. It was published in Shounen Jump+, a web magazine that could be said to be the slightly more mature version of Shounen Jump. Without a doubt, a lot of ordinary Shounen Jump readers are going to read this, too.
Tooda Oto, who gets the artist credits, is relatively new as a primary artist; they were a noted assistant on the popular shounen series, Fire Punch and have just one other credit as a primary artist. Yuki Suetsugui, who gets the writing credits, is the author/artist of the mega-hit shoujo series, Chihayafuru. Tokiumi Yui, who gets the scenario writing credits, is probably best known to Western folks for writing the LN adaptation of Your Lie in April. She's a noted (adaptation) writer in her own right. All three of them collaborated on the recent Chihayafuru: Middle School Arc spin-off, in very similar roles.
...which is all to say, in spite of the newish artist, this is a notable magazine with notable names writing a pretty real trans story. I've no idea what kind of precedent there is for this, but I was really pleased to take note of it, anyway.
Oh wow that is actually pretty impressive and cool. Thanks for that info.
