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Compilation of short stories:

Hotel: Since 2079 (2006)
It is the year 2272 A.D.

A computer continues to live on in order to complete a mission in a world where all life, including Mankind, has gone extinct. This is a record of those 27 million years of its heroic struggle.

Present (2006)
Hanako suffers from a terrible disease. After awakening from a deep slumber, Hanako has only three days to live.

Subete wa Maguro no Tame datta (It Was All for the Tuna) (2008)
Tuna have become extinct and Jun Shiozaki will do everything possible and imaginable to bring them back.

Set in modern-day Japan, our main character Noriko finds out that she is pregnant with her lover Matsumura’s baby. He, however, is an important doctor with a family and everything already. Noriko wants to have the baby, but Matsumura says that it’s actually a rapidly growing cancer and that they have to remove it immediately. It might also be neither of these things…

A "Diadem" is a word for 'crown' that has its root in Greek. "Stephanos", which appeared in "Mandala" 01, was also a 'crown'. It seems that we could consider this the second work in a continuing series of shorts that should perhaps be called a "Crown series".


Related Series
Hotel: Since 2079 (Adapted From)

Associated Names
Boichi作品集 HOTEL
It Was All for the Tuna
Present (Boichi)
Subete wa Maguro no Tame datta

Groups Scanlating

Latest Release(s)
v.1 c.1-5 (end) by Illuminati-Manga & Japanzai (1240d ago)
v.1 c.Diadem by Illuminati-Manga (2555d ago)
v.1 c.Present by Kotonoha (3033d ago)
Search for all releases of this series

Status in Country of Origin
1 Volume (Complete)

Completely Scanlated?

Anime Start/End Chapter

User Reviews


User Rating
Average: 8.5 / 10.0 (864 votes)
Bayesian Average: 8.43 / 10.0
 34% (291 votes)
 23% (197 votes)
 22% (192 votes)
 11% (96 votes)
 5% (40 votes)
 2% (20 votes)
 1% (9 votes)
 1% (8 votes)
 1% (5 votes)
 1% (6 votes)

Last Updated
February 9th 2015, 9:11pm PST



Category Recommendations





Original Publisher

Serialized In (magazine)
Mandala (Kodansha)
Morning (Kodansha)

Licensed (in English)

English Publisher

Activity Stats (vs. other series)
Weekly Pos #810 increased(+278)
Monthly Pos #1469 increased(+185)
3 Month Pos #1681 increased(+75)
6 Month Pos #2020 increased(+136)

List Stats
On 294 reading lists
On 553 wish lists
On 2020 completed lists
On 17 unfinished lists
On 302 custom lists

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User Comments [ Order by time added ]

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27 million years is a long time.   
Rating: N/A
by Adonia
February 11th, 2009, 8:09am
i really didn't get the impression that the mangaka was trying to force global warming down my throat. i felt that it was more of a story about the struggle for life, remembrance and the long loneliness of a seemingly endless wait for change. Louis exhibited a touch of humanity himself which, though subtly expressed, made his character rather endearing.

rather than being preachy i think the mangaka just needed any excuse to wipe out the planet.
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Hotel ~   
Rating: N/A
by cyttonmyface
January 27th, 2008, 8:57pm
Simply put, phenomenal piece of work. its a must read
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Greatest oneshot in history   
Rating: 10.0 / 10.0
by BadassOtaku
October 30th, 2010, 4:18am
I think that a lot of people are getting the focus of this manga completely wrong.
It isn't about global warming or humanity dooming itself. That's just the background for the story. It's about Louis and his achievement. It's about the miracle of his survival. It's about the Hotel and what it represents: the fufillment of a 27 million year old promise
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How you read it ....   
Rating: 10.0 / 10.0
by yblees
November 1st, 2008, 6:18pm
Reading the earlier comments about the global warming message - I get the feeling those readers may have completely missed the story of the "person" who against all odds, over an unimaginable period of time, stayed unwaveringly true to the memory of it's most important people in "his" life.
I rarely give 10 ratings, but this definitely deserves it.

... Last updated on November 2nd, 2008, 12:25am
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Rating: N/A
by Onizuka
February 8th, 2009, 12:34am
Some of you people are too serious. Propaganda my ass. Global warming wasn't the main message in the story. yblees summed it up. Imo, for a one shot, it drew emotion, it provoked thought, it delivered. Nuff said.
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That was great!   
Rating: 10.0 / 10.0
by Demoo
July 16th, 2008, 6:12pm
I wasn't expecting much from this oneshot but when i started reading it i felt that the author made a great story. I recommend that fans of sci-fi manga read it.
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Manga at its best.   
Rating: 10.0 / 10.0
by astroasis
September 21st, 2007, 11:58am
This one-shot is brilliant. The artwork is beautiful, the story tight and compelling. It also carries an important message - and is truly touching, as well. Sci-fi at its best, as well as manga at its best. A brilliant work.
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a touching story of reminiscence and struggle against mortality   
Rating: 10.0 / 10.0
by sarah-eats-cupcakes
November 3rd, 2011, 10:58am
louis' emotional struggle for survival, existence and recognition was a very realistic journey to attain humanity.
his continuous need to "repair" himself and "become smarter" was very metaphoric, because we, humans, spend so much time chasing perfection,security and other far-fetched ideals but in the end we discover that we never gain anything out of doing this; infact, louis' increase in intelligence made him more aware of his emotions.
this is a story about our eternal struggle to be remembered, the eternal struggle of finding your place in society.
the eternal struggle against loneliness
and finding our "purpose" in life.
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old school Sci-Fi   
Rating: 9.5 / 10.0
by bully_jesus
August 24th, 2007, 12:21pm
This story reminds me a lot of old school 60s Asmiov kind of Science Fiction. Nice Short Story with a short epic tale of human demise. For everybody who likes the kind of sci fi that lacks all action + boobs +monsters but with a portion of thought, i highly recommend
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Rating: N/A
by milkgreentea
August 4th, 2014, 10:25pm
1st story - 8.9/10 the best
2nd - 8.5/10 sad, but alright
3rd - 7/10 ridiculous and absurd, but lots of comedy
4th & 5th - 2/10 extremely weird, ecchi stories that made no sense to me

There is a huge difference in quality between the first two oneshots and the last two

... Last updated on August 4th, 2014, 10:26pm
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