My favorite characters are Kyoshika and Eito and at first I questioned my brain why I like such different characters, but I thought about it... they actually have a few similarities
>both socially dumb (Kyoshika in a cute way, Eito in a dangerous way)
>both grew up in isolation (Kyoshika physically, Eito mentally)
>both know everything they know from reading books/manga
>both are pretty immature despite seeming serious and intimidating at first
>both have black and white morality and one track mind (Eito obviously the whole "humanity bad thing" and Kyoshika in Route 0 was the most vocal about "slaying evil invaders in the name of good". I think she even called SDU "righteous" a few times and we all know who likes this word a lot)