A Togainu no Chi anthology focusing on Akira.

One day, a boy takes part by chance in a pub game called "the angel game", and wins an angel. But he never thined he could be captivated by him... (Source: Kadokawa, translated)

A spin off for J no Subete, 15 years later.

Oneshot following Yusa Chiaki a ordinary high school student, whose motto is simplicity and frugality. Her favorite character is Uesugi Youzan. One day while going to search for a part time job she gets chased by kappas and a mysterious man rescues her. What will happen to her now? (Source: Batoto)

One morning, the second daughter of a marquis family—Celestina—vanishes without warning. The Second Prince who cares for her begins searching. But when arriving at the marquis’s estate, something strange has happened: everyone there seems to have forgotten the existence of the second daughter. It is as though she never existed. Amid this bizarre erasure, Celestina’s rare status as the holder of the “Windaria’s Snow-Moon-Flower”—a power that can affect the country’s fate—becomes clear. Why did she hide her identity? What secret mission lies in her heart? https://www.cmoa.jp/title/328826/

One day, the protagonist started to see hearts flying out of his crush's head.

A booklet packaged with Harta volume 26 at select stores. It's an anthology of one-shots centering on the theme of fantasy. (Source: Natalie, translated)