I've had a bit of fun with this ID already. Hoshiko and her console, Keiko, give me the impression of how to build a companion deck. If you're running Taka, Fueno, Maemi or Poemu, Keiko helps lessen the credit loss from Mahou Shoujo.

Speaking of which, we finally have a flip identity for a Runner! Let's talk about Untold Protagonist for a bit. 4, 45 minimum, 15 influence... I'm not the best at Netrunner, but I feel this is pretty standard. Her ability, though, is what sets her apart: "When your turn ends, if you accessed at least 1 card this turn, gain 2 and flip this ID". In other words, you have more of an incentive to run. 2 credits as a reward for an access seems good, but then we come to the flip side: Mahou Shoujo.

Side note, my Japanese isn't the best (only two semesters in college), but I think it translates to "Magic Girl". And this magic girl has three things going for her. First, she now has a link. In my LGS meta, there weren't a lot of tracers, but there were way too many Weyland Kill decks. Second, she's Digital. Correct me if I'm wrong, but only one other ID had the Digital subtype, and it was Apex. A card also released in Uprising, DreamNet, can be used without needing to spend time on link. I'm not sure if there are any other digital interactions, but I think theoretically, you could run a cloud suite if you had an additional link, such as from The Archivist. Third, her first ability: "When your turn begins, draw 1 card and lose 1". If you remember earlier, I mentioned how Keiko helps mitigate the credit loss. Simply drop a Fencer, and you get your credit back. Or just install a resource with Poemu. Get your credit back.

Of course, one must always awaken from their dreams. If you don't access any cards while you're playing Mahou Shoujo, she flips back over to Untold Protagonist. So the pressure's on to get accesses each turn, or return to the waking world. As such, you can be kind of screwed if the Corp decides to put a server behind a paywall, force you to trash your precious allies, or simply end the run with an earlier score.

My thoughts on Hoshiko? This ID, if done correctly, can be a lot of fun for you. Hoshiko might be an easy ID to build around. Just make sure you aren't wandering into an ambush blindly.