...huh, that's...a pretty good explanation as to why Not Allowed to Grow Up is in effect, even if you can usually sweep this under the rug as being a comedy manga.
@AbuHajaar Why would Japan not know of HRE and why would it be hard to get there? The 16th-17th centuries were the times European missionaries (like Francis Xavier) from Spain and Portugal frequently travelled to Sengoku Era Japan to spread Christianity. Some daimyos either became Christians or...
"can someone remind me who sakimori is? i cant remember and im too lazy to look for her in previous chapters... "
It's the main maid of Hakua who always tries to get her and Kimito together (you can deduce that by how she calls him and Hakua sama)