After the final downfall of the rogue Bakugan Naga, peace was brought back to Vestroia. With the help of Danma Kuusou, his companion Pyrus Dragonoid, and other Battle Brawlers, the Infinity and Silent Cores were combined and the realm was recreated. However, New Vestroia will not be given any respite as humanoid alien invaders, the Vestals, arrive and conquer the Bakugan world in one fell swoop. Armed with a fearsome machine capable of restricting Bakugan into their ball forms, they aim to enslave the race as a form of entertainment. Now, the only force standing in their way is the Bakugan Battle Brawlers Resistance—a group of humans, Bakugan, and Vestals who oppose the idea of annihilating a sentient race. Led by Danma, they must venture into enemy-occupied New Vestroia and repel the invaders, to assure the survival of the entire world. [Written by MAL Rewrite]

In a world inhabited by people only a few inches tall, young women Hakumei and Mikochi live together in a house built into a tree. Hakumei is an energetic and tomboyish carpenter, while Mikochi is a feminine and calm tailor. Despite their differences, they get along well and spend their days having fun living their lives in the woods. The two of them spend their time working, going on sightseeing adventures, and taking shopping trips into Tsumiki Marketplace by the ocean. They make many friends along the way, be they sentient woodland creatures like Iwashi the Weasel or fellow miniature people such as the songstress Konju and the inventor Sen. Hakumei to Mikochi is a relaxing look into the day-to-day lives of its titular characters as they explore and interact with their tiny world which seems to be straight out of a fairy tale. [Written by MAL Rewrite]

Reaching a period of life where they are neither a child nor an adult, 12-year-old Hanabi Ayase and Aoi Yui meet with life-changing events. Due to the mischievous demeanor of her male classmates, Ayase does not think highly of the opposite sex. However, her perspective begins to change after she is paired with the kind-hearted Takao Yuuto for a class assignment and unexpectedly shared their first kisses with each other on the school rooftop. With her best friend discovering love, Aoi yearns to seek her own. She finds herself falling in love with the rash Kazuma Hiyama after protecting her from a rejected suitor who had talked behind her back. 12-sai.: Chicchana Mune no Tokimeki follows the four in this phase of adolescence. As they grow up alongside each other, this sweet romance depicts the innocence and excitement of first love. [Written by MAL Rewrite]

Continuing right where season 1 left off: Harima still likes Tenma but still runs into obstacles everytime he tries to confess his love to her. To complicate the situation, Class 2-D challenges class 2-C once again and there's a rumor floating around that Harima and Yakumo are dating as the school prepares for the cultural festival. (Source: ANN)