Ultraman - Season 30

Ayaka City is a peaceful place where ordinary life is disrupted when a giant monster appears. Ushio Minato, who runs the clothing store Quattro M, has two sons, Katsumi and Isami, who are caught up in the rampage of the fire monster. When a moment of desperation comes, the curtain opens on a story of families as the two brothers gain the ability to become Ultraman. 

Despite his younger brother taking the ability to become Ultraman in stride, Katsumi is afraid of the power he's obtained. Their younger sister, Asahi, whose catchphrase is "Happy♪", uses her healing nature to help the two brothers, who have clashed over their views. Suddenly, a monster appears and Isami is unable to move when he's pinned down.

The three siblings visit the passionate Makoto Aizen, president of Aizen Tech, a company located in Ayaka City and are enchanted by their displays of cutting-edge technology. It's then revealed that the mother of the three siblings was once doing "specific research" for AizenTech. During their visit, a giant monster with the ability to turn items into stone attacks.

Asahi runs from home for some self-searching.

Katsumi and Isami come to know about Saki's past. Katsumi empathizes with her feelings but Isami trembles with anger.

Katsumi and Isami couldn't see eye to eye. Saki Mitsurugi appears before them and suddenly begins to talk about the sudden disappearance of their mother.