I actually started watching this because of a model kit i built, and from there i hopped down the rabbit hole. Mikazuki is a well done 'emotionless' protagonist, and while he takes the trope of 'protag op', he actually does have his weaknesses, and does show emotion (this is made blatantly clear mid season). Not only that, but his power is well explained, and comes at a cost later on in the series. All in all, Iron Blooded Orphans is amazing. Even if you dont like the series, the opening is pretty kickass