Eh, it was absolutely fantastic for until about vol 4 where the plot direction became a bit questionable. Definitely isn't a bad way to go about it, but there were many ways the plot could've progressed which I thought would've been better.
dang it was a harem all along every female in the series has a non explained crush on takayama whose character start to get pretty shitty as he start to act like Jesus but with arrogance and a lot of edgy talk even the mc have a little mancrush on him
he was a lot better at the start of the manga as he acted like a really good hearted man and cared for him grandpa and friend as equal
on the other hand there was a more pointless character than him arthur whose death supposed to be emotional but i called it since i seen his idiotic behavior and i couldn't careless his plan was doomed to be failure since the start his survivor friends are just trash who try to act tough
i really liked this manga at the start but its kinda going downhill pretty fast and i fear the direction its going to is takayama betraying his friend and going full edge mode
Barbara seems to be into that Adler guy she left back at the castle
and as for the explanation, it's true that there isn't one in the chapters so far but I have some ideas about that. He's also not in a position as the sole male protagonist and this isn't a romance series. Even if he has a "harem," it hasn't really been important yet at all.
I feel like this probably goes back to something "Fox" was saying.
Takayama may have already become a being belonging to a higher dimension than humanity, and could loosely be referred to as something like a god or a devil depending on how things go from here. Barbara's situation makes me think that a lot of the girls are mistaking a species related "attraction" to something close to the ultimate form of the birdman so far as a romantic attraction because they weren't already romantically attracted to someone, and can't feel a difference between those two things. Something along the lines of him being the alpha of the pack, but it's not like he'd take every female in the species for himself at the end of the day? He's probably not even interested in that at all to begin with.
I'd still like to see a bit more of all this before making any assumptions one way or the other though. That's just some stuff I've been thinking about so far with the lack of any significant show of romance in the series.
I considered dropping this because I disliked the main character, but I'm glad I kept reading because he makes progress and grows from the person he was in chapter one. The story is developing really well and some of the designs are amazing. This is shaping up to be an incredible series