Kokoro's school is teaming up with another to form a bazaar so they can sell/re-home gently used items everyone no longer uses around their homes. On her way from from school Tama Elder tells her that she and her Cocotama friends won a trip to the Cocotama World. Here they see how full fledged Cocotama gods work. Elder Tama asks for Kokoro's help in helping humans realize the value of their items instead of so easily tossing them away. But Tepple had snuck into the Cocotama world with the others and taken a key acorn which unlocks the Happy Tree that contains Happy Stars, the source of magic for their world. Elder Tama found out it was missing and the Cocotama gang try to track it down. He says that mushrooms are appearing on tossed away items that as they are born from the feelings of sadness, and they emit a negative energy that effects both humans and Cocotama. Cocotama can get rid of them but not without the acorn and not at the speed humans are currently discarding items at. Tepple uses the acorn to take a Happy Star but inadvertently causes a rift of darkness and an infestation of mushrooms in Cocotama World. And Happy Stars begin spilling out into the human world draining all magic out. Kokoro and the Cocotama must heal Tepple's heart before the darkness consumes the human world.

The story is set in a world where every event has been turned into programs, and mysterious monsters known as Promin maintain the world. However, many Promin who have turned into bugs known as Bugmin are responsible for many of the world's real-life bugs. Left alone, they may eventually turn into a big problem. The boy Yuuto encounters the space dog Wanda, and the pair use a camera-like device and key items to capture Bugmin. Promin themselves are able to do things like accelerate objects, spew fire, or create objects, through an ability known as Kamiwaza (miracle), and are able to fend off Bugmin with it. At first, the Bugmin only cause small, bothersome things, but it will soon elevate into a global scale threat. Can one boy and one dog save the world? (Source: ANN)

When he was a child and out catching bugs, Jin Mikuriya fatefully encountered a deity, which became the inspiration for his newest piece of art: The Tree Spirit. Trying to think of a way to bring the wooden statue to school, Jin believes that the rest of the day will be spent admiring his work. But before he can even lift it, the sculpture begins to absorb the earth around it and explodes into a cute girl! The girl, Nagi, who introduces herself as a guardian of the earth, proclaims that Jin must help her get rid of the impurities that plague the land. But alas, due to Nagi's tree being cut down and her powers completely drained, she finds herself cleansing the impurities with only a magical wand! With their lives now intertwined, Jin and Nagi find ways to learn more about one another through the endless amounts of daily antics.

The alien Abyssal Fleet continues to threaten humanity, and the Kanmusu—girls endowed with the spirits of Japanese warships—are mankind's last hope. With their ongoing struggles, the Kanmusu are almost certain to sink below the waves into their demise. The Mutsuki-class destroyer Kisaragi is one of the unfortunate ships to meet such a fate. However, following a successful night raid, the Eighth Fleet's Kanmusu spot Kisaragi alive but unconscious, floating to the sea surface. But the anomalous situation and Kisaragi's strange behavior leave Kanmusu cautious of her. Furthermore, the other ships start to hear mysterious voices and come across crimson waters that damage their equipment. Strangely, Fubuki, the lead ship of the Fubuki-class destroyers, appears unaffected. As Fubuki and the other Kanmusu tackle the unusual occurrences around them, the harsh reality of their existence and the Abyssal Fleet begins to unravel. Even so, the girls must keep facing forward to liberate the sea and protect those they cherish the most.