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HoloX are still pretty close to each other but frankly their cohesion as a group got shattered due to Laplus not making it to their 1st anniversary. Regardless if she actually was sick when it happened and if the idea is that she's just the figurehead whilst Lui is the true leader, Laplus not being present for that anniversary live forced the rest to improvise and just talk to each other until it came to the singing part that only had Laplus pre-recorded performance for their group song. Now you can see that they only all get together for events or company mandated collabs.