It is a collection of one shot manga by Boichi. As usual the difficulty to rate this one book because the variety of stories, some good some bad. This book has one more problem: somehow the publisher/editor put the sequence of the story from best to worst (well relatively, I admit I exaggerate a little).
First story, "HOTEL" - the atmosphere, the feel, the drama, the ambition of the story, all excellent!. One of the best one-shot manga ever! 5 star
Second story, "PRESENT" - a little bit plot twist and I like the drama. From drama wise, it is the second best from the five stories. 3 star
Third story, "IT WAS ALL FOR THE TUNA" - it is the most comedic story of this collection. For science fiction ideas and theme, I like this story better than "PRESENT". The comedy made the drama less intense though. And the story is getting absurd. 3.5 star
Fourth story "STEPHANOS" - I don't like this story. I think the setting is not settled enough to deliver the climax without confusing the readers. The theme is darker than previous ones, and it is a supernatural fantasy, not a science fiction. 1 star
Fifth story "Diadem" - an action fantasy theme. The one shot format basically presenting what is the setting and background, a bit story, then finished. Could be considered the worse story, but to be fair, the length is so short, I appreciate how the story could put so much content on so little number of pages. 2 star (setting only, maybe 3 star)