First of all, I was confused about the page style. The first chapter looks like normal manga pages while the rest looks more like webtoon (though not completely, more like a mix between the two of them). I wonder why that is. Since I liked the manga style better, it was a bit unsatisfying. The art itself was great, though.
Now to the content. I've rarely seen such a bad story and storytelling. None of the characters has any kind of characteristics. The main character is a plain boy who works as a waiter — that's seriously all you'll get to know about him. The other main character is a dumb assassin — his job only seems to be an excuse for him to be "mysterious" and quiet and also he looks like a priest, not an assassin. There is one other character in the story which was very hard to understand. In the end, it was so confusing that I didn't even understand the aims of the three(!) characters. Except for being lovey-dovey since the beginning (does that count as an aim?). There was so little plot (and if there was at least something which one could be calling plot, it was extremely made up) that it could almost count as PWP, however, there were not enough smut scenes in it for that.
There was another oneshot in the last chapter. It contains the japanese fairytale of the two Onis in a sliiiightly changed way — which is being Yaoi (what a huge change! cough). I cannot say that the oneshot was BASED on the fairytale, because it rather IS the fairytale. So if you know the fairytale as I do, it is extremely predictable and unsuspenseful.
I think the Mangaka has some serious problems inventing even the slightest bit of a story. If she would team up with an author, I think the result would be great since her art style is quite nice. But like this I feel sorry to say that it's not worth reading the manga at all because it's lacking everything except art... If the description of the manga caught your eye, I'd rather recommend you to read "A thousand cranes" which starts similarly but is far better. Don't waste your time on this one.