Dude's underrated as a character, but let me briefly address his gameplay
The triple quick deck when you got a world full of 2030s and NP reloading with Vitch.
Star manipulation is super cool! I'm pretty sure only MHXA has something similar to that.
It's just a shame I don't see much love for him. In all fairness, it makes sense. He debuted in the first EoR and outside of dancing with Jalter, Moriarty being evil grandpa and Emiya Alter, he kind of got overshadowed(somewhat ironic).
Then his most prevalent appearance is in Halloween 3. And...that's really it.
But wait, he got a buff to his 2nd skill through his interlude! Indeed he did, and I very much liked the interlude(addressing what he did in Shinjuku a bit). But I wouldn't entirely be making this post if I felt he was good enough as he is. I don't think he needs a buff, nah(buff the whole damn Quick card system instead). But he should appear a but more often I think. He's got the personality to show up in more wacky events, and that grounded aspect to him- where he wants to prove himself as right in his actions is something to be explored(especially in the LB).
Was the whole reason I made this because I'm salty I keep finding yaoi art of him and Ash on pixiv(seriously pixiv, WTF) I mean, kind of? But really thinking on it more, it wouldn't hurt to include a rather amicable guy like him along for another ride that is the madness Halloween or GUDAGUDA(he actually reminds me of Takasugi pretty well....hmm. Kotaro, get the red hair dye) or just any event really.