Reminds me of Ruach, haha. Anyways, nice job, tapi! I can't believe that I forgot to look at the inventions that haven't even been graded yet. Well, this one deserves the max 10 exp for creativeness and for how effective it is. If those suggestions are adhered, then shinigami'll find it more helpful to them when on missions where there is no healer around. After all, I'm pretty sure that Lia has her hands full back at the division headquarters. However, if you do decide to turn these into reiatsu rich foods, they need to have some limitations. Like for example: these can only be used once per battle, and they only restore about 10 reiatsu. Or, you can have like some side effects for multiple usage? Idk, i'm just throwing out ideas here. Anyways, job well done!