Chachamaru has been seriously slacking on locating those alla alba badges, else they would've found Yue a while back by now.. :-/
Yue's badge must have been damaged I guess.
or she hasn't been carrying it with her all the time.....yeah that is weird how she hasn't noticed it yet.
she might have lost it. or maybe destroyed, but that would be weird because asakura and chachamaru would have found a lost badge.
I think yue still has it because it was one of the things that were the possible keys to her lost memory that she kept with her. Like the pactio card and her.....super panties.
Yue is still trying to conneect the Pactico card with Negi and her lost memories. Yue And her fellow Valkryes do talk about Nagi. They are unaware that Nagi the fighter is Negi in disguise.
Ch. 235 is one of those chapters which comes before the next sub-arc. The next sub-arc will likely focus mostly on the Nagi Springfield Cup. We will likely to find if Negi's and Kotario's trainer (Tobusaka) is a Good guy or a typical opportunitist.
he still needs to kick Kagetaro's ass ya know... revenge for his right arm... lawl...