UT has been a deserter for decades so it's highly unlikely he knows everything that's going on in Grim Reaper HQ and even if he does cooperate with someone from there I doubt he would talk about her with just anyone. Her coming back in the last arc would cause so much chaos, there's so much potential for drama!!
All this to say THERE IS A CHANCE CLAUDIA CAN COME BACK IN MANGA TRUST ME IT MAKES SENSE
is there already an AU for this scenario? has anyone written fanfic on this?