USCA is a doujin manga anthology headed by Keita Mori.

As the destruction of Earth approaches, an alien and a human girl become friends. (Source: Shogakukan, translated) *Note : this work was first published as a doujin on Pixiv after winning the 364th Spirits manga prize. It got released as a one-shot in the Weekly Big Comics Spirits 2022/21-22 issue in April 2022.*

*Note: Volume 4 includes Koukou Jidai (高校時代 ), and Medium no Kenkyuu (ミディアムの研究).*

This entry only concerns the 2 manga that are present in the artbook "Fate/stay night 15 Years of TYPE-MOON", called "Fate/15th Camp" and "Curtain Call" respectively. Fate/15th Camp is a collaborative work of 14 artists and one writer.

A strict, remote convent inhabited only by women with troubled pasts, forced to leave their homes for various reasons. But in reality—it's a paradise for women, where young Mother Superior Miranda and the nuns gather gossip from across the country, indulge in rumors, and live freely and joyfully! Sometimes, young ladies whose engagements have been broken off, those suffering from engagements with abusive men, or those desperately wanting their fiancés to notice them, visit the convent… Armed with information gathered through entertainment, we'll take care of all the worries of these lost souls. So go ahead and seize your happiness to your heart's content! (Source: Ichijinsha, translated)