has anyone read it? you should
the summary is:
a 16 year old boy, kazuki mutou, is walking home from school by an old abandoned factory. he sees a girl about his age who is getting attacked by a strange giant-snake-ish monster. being the reckless idiot he is, he jumps in to save the girl, getting killed. he is revived by her, tokiko tsumura, who gives him another chance at life by replacing his pierced, thus dead, heart with a kakugane, a work of alchemy. he starts to fight with the girl against these monsters. he is soon presented with a choice: become a renkin warrior and protect humans from the homunculi, or impossibly keep going on with his normal school life. and then the story keeps going.
its by the author of rurouni kenshin, and has a bit of alchemy in it, though its absolutely nothing like fullmetal alchemist. in japan, all ten volumes are complete, though on onemanga there's only 39 chapters so far. onemanga isnt exactly uploading anymore, or so i think TT_TT