Whohoo I got patience to play offline again O_o

[Thesord]

So hopefully,next week I might go back online(Sick of hearing me say the same thing ey?),after what looks like 11 months.....

Meanwhile,I kept raising my Skyly Hucast,and soon will be on ult with my lv 200 mag,designed specially for a Hucast..

I created a Skyly with the objective of getting Skyly-only weapons offline,with sights set on the Agito 1975(To further convert into an Orotiagito),Sealed J-Sword,Sange and Yasha and other must's..

Now I just have 2 questions..

1.Are the challenge modes' S-Rank rewards any good when fully grinded(I know it's 250 grind,which is = 500 atp.which is good,but still..)?I was thinking of doing challenge modes online,but now that I look at it,they don't seem that great,even fully grinded...

2.Also,because I'm beating the areas offline,will people be able to access,for example,the ult. ruins,if I reach them,talk to the principal(Offline),and then host a game online(Just like they would on offline multiplayer)?

EDIT:Won't be able to reply for a a day and a 1/2.