From Shogakukan: I will fight, fellows! Four hundred years ago, there were two men, Shiro and Sakyo, who obtained the elixir of life, in the civil war era. Their fighting will never end.

22-year-old Kawaguchi Ryouko is joining the working world as a concierge at the famous Tokyo Quincy Hotel. She's working under the famous chief concierge Mogami Hai, who is an expert at knowing or figuring out exactly what customers need. Ryouko is eager to become a fantastic concierge herself, and help the lives of everyone who stays at the Quincy Hotel run more smoothly! (Source: MangaHelpers)

An anthology of 4-page BL short stories by various mangaka.

Shuugo Hayami is a doctor at a nursing hospital, which was once a psychiatric hospital. One evening, when he was on night duty, a man in a clown mask breaks into the hospital, and he is not alone. He is with Hitomi Kawasaki, a university student who has been shot by the masked man. The masked man tells Shuugo to treat Hitomi, and also takes the 64 people in the hospital hostage. Soon, Shuugo and Hitomi try to escape from the hospital, and they encounter mysterious cases one at a time. -AsianWiki

Masaru and the Hayase family move from the city center to the suburbs, surrounded by abundant nature. Two fishing hooks are found inside a black sea bream delivered as a housewarming gift. The hooks tell the story of a fierce battle between a fisherman and a black sea bream. Fascinated by the fierce battle between man and fish, Masaru makes his own fishing equipment and heads out to a nearby river, but...!? This is a story of fishing and friendship full of adventure for young Masaru and his friends. (Source: Shueisha, translated) *Note: \- Includes the one-shot "Wild Adventure"*

109 different mangaka depict their daily lives since COVID-19 started.

There are twenty independent stories written by twenty different authors, sharing the common theme of "April". An anthology that is considered a rare item as it has never hit the shelves as a standalone book. There is no ISBN and it is an unbuyable except in online auctions. The anthology was published as a bonus gift to Dengeki Magazine readers in 2009.

The manga is set in the year 2018, and begins with the "Helltopia Incident," the worst terrorist attack in Japanese history. The perpetrators are evil cyborgs with abilities that far surpass those of normal humans. A normal high school student named Tsunehiko Kamijō gets involved in the incident.

A hotel plans to work together with a nearby shopping center to attract more customers and improve their level of service. To help, they've brought in an excellent advisor, Kuon Kyouya, who uses his skills to figure out what customers want. Hopefully, the concierge service at the hotel will soon be at the platinum level! (Source: MangaHelpers)

Yuna Mogami, the daughter of a legendary hotel concierge, starts working as a care-worker at a nursing home for the elderly—which seems like a nightmare at first. People living out their final years must confront all sorts of personal and family issues—Yuna is under heavy pressure to provide the ultimate service: "Attending people on their deathbeds" and "Making sure their final moments are happy ones." Can she deliver her imperial hospitality, for the sake of the people in need—?! (Source: Silent Manga Audition)