The anime centers on the members of the real-world four-member male vocal unit Urashimasakatasen. Uratanuki, Shima, Tonari no Sakata, and Senra appear in the shorts as high school students. (Source: ANN)

In the late Edo period, Japan had experienced an unprecedented crisis by Kurofune (Black Ships), the ships from foreign countries. But a giant robot called Onigami, which has existed since ancient time, dispelled the Kurofune ships and the exclusion of foreigners was accomplished. The story begins in Japan where Meiji restoration in 1868 didn't happen. The tagline says, "I can be the greatest man in the world, because I am a virgin!!" (Source: Crunchyroll)

Roaming the halls of the all-boys Sanada North High School are three close comrades: the eccentric ringleader with a hyperactive imagination Hidenori, the passionate Yoshitake, and the rational and prudent Tadakuni. Their lives are filled with giant robots, true love, and intense drama... in their colorful imaginations, at least. In reality, they are just an everyday trio of ordinary guys trying to pass the time, but who said everyday life couldn't be interesting? Whether it's an intricate RPG reenactment or an unexpected romantic encounter on the riverbank at sunset, Danshi Koukousei no Nichijou is rife with bizarre yet hilariously relatable situations that are anything but mundane. [Written by MAL Rewrite]

Thirteen years after their sudden disappearance, an alien race known as the Heterodyne resurface without warning. To combat the Heterodyne, three office workers from the 21st Century Security Corporation operate Dai-Guard - a giant robot no longer regarded as an oversized paperweight. Unfortunately, Dai-Guard is somewhat obsolete and in disrepair. It's a tough job, but salarymen can also save the world. (Source: ANN)