Tegami Bachi: Letter Bee - S01

After Niche carries the wounded and stunned Lag back to the Bee Hive, the Letter Bee finally starts putting the puzzle together. Now he knows what happened to Gauche, why the Marauders are so focused on stealing mail, and what the group controlling both of them, Reverse, is really after. But when he is forbidden from revealing the truth, Lag is soon forced out of the artificial sunlight and back into the world of perpetual night. Before long, Reverse's plan to bring down the Letter Bees and overthrow the Amberground government begins to speed up. As if things were not already bad enough, the giant insect creatures called gaichuu seem to be evolving into something new; there may be traitors inside the Hive; and Niche's sister, who is definitely not friendly toward humans, shows up and turns a family drama into a full-scale siege. It all means serious trouble for the Letter Bees, but if anyone can weather the storms and gloom of night, Lag and his team are the ones who will deliver.