Separate but Intertwined

When Yumichika discovers that he and Ikkaku are with not only assignments at the same time, but separate ones, he can't help but wish it had ended up otherwise, especially since them separating like this had never been with several days straight doing so like this before. While Ikkaku remains in Soul Society to handle a definite problem, Yumichika leaves with a group of three other reapers whom he doesn't even really know to investigate what could turn out to be absolutely nothing in the human realm.But is it really just a waste of time, or might it become a huge problem for his considerably-small group? Focused on Yumichika's mission, based between Aizen's defeat and Blood Warfare Arc.