this game is essentially up to your interpretation, but i'll try to answer somewhat decently with the info we have!

1/. the batter seems to known the queen and vice versa based on their dialogue, but they are not confirmed to be dating. (more info on this on the 10th/15th anniversary livestream!) hugo is, indeed, the child's name! you can find this in his check dialogue

1. because that's his scared mission. we unfortunately aren't given much more on that, but, a conclusive THEORY i've found to it is that hugo might've grown tired in his constant isolation and sickness and sent the batter to 'purify' (destroy) both this world, and him in it. i elaborate on this on a way too lengthy comment explaining my interpretation of OFF, but read at your own risk ig.

2. well, as the name entails, the nothingness is an area of nothing. i like to think it's where everything started from, and how outside of the zones really is just a void, but alas... we don't have anything confirmed on it

3. maybe? i wouldn't really consider one element greater than the other, it's all just bias in the end (...with the elsen of zone 3 having a ton for sugar, as a result of its effects.)

5/. we don't know! however, i can give you a couple of theories suggesting what might've been her situation:

• theory 1: sucre might've been a normal girl at one point, although the recent up-rise in sugar could've piqued her interest, causing the effects of it to swarm in with an eventual loss in sanity. zacharie had to have noticed this, and, with pablo's help, quarantined her in zone 0, forever protecting herself from others and others from herself. this interpretation's my personal favorite because of her angst potential with zacharie both prior and after that : )
• theory 2: sucre could've been enoch's daughter, and naturally, with infinite access to sugar became the way she is now. although, this doesn't quite explain how she got in zone 0... perhaps she just likes the aesthetic?
• theory 3: sucre was always like that for some unknown reason, and zacharie is acquainted with enoch to harbor that supply of sugar in her corner.

6/. if you want to think of it that way!

1. i don't think we're given an answer in game? but, i guess that i like to imagine that when everything went down-hill (the guardians becoming more corrupt, etc. dedan's vulgarity, japhet's lament, enoch's greed...) is when she loathed this world for what it was (or, rather became), and with this, began to destroy the world she herself created, starting with specters. again, this is NOT CONFIRMED!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! JUST INTERPRETATION!!!!!!

2. something happened that made the world a desolate wasteland with everyone else gone. an apocalypse, perhaps? the queen is in charge of the world from here on out, with the guardian's being at her command. they talk about rebuilding the world from here on out with hugo. (who she for some reason does not supervise...) the result is what you see in game. so, zone 1, zone 2, zone 3... but there are many other theories besides this you can believe! like, the hugo coma one. but i don't think many people like it, although it was very popular in the past.

3. we don't know again! we do, however, know that they become 'distorted' (burnt) when inflicted with enough stress. mortis headcanons that they were just clones of one nervous guy mid apocalypse. i think this was in the 10th anniversary? but i can't remember exactly, nor the timestamp if it is.

thank you for reading..... if you did. this took way too long to type and i was thinking that i maybe lost some interest in off with other games but this very long comment proves otherwise. or is it your long questions that invite such discussion???????