Moshimoshi's, are people who died, that where reincarnated as a tool type demon they decided to call moshimoshi's (Translates to hello in Japanese) since they just appeared and demons just greeted them to their community, and made hell a lil more enjoyable, they called them moshimoshi's as a symbol of a pleasant hello.
Sweet Moshimoshi's are soul's that died on purpose (killed themselves), and gets reincarnated as a cute sugar coated item despite them killing themselves and how their treated (their treated well) for such an act.
Bitter Moshimoshi's are soul's who died but didn't want to so they are tortured by being reincarnated as a disturbing/weapon item, bitter moshi's are hikikomori's and miserable.but not all are so bitter :)
Normal Moshimoshi's died of normal circumstances, (Natural) by old age and such, and they reincarnated as something they loved or liked doing.
Moshimoshi's started being sent to earth to cause others to do terrible things so they can go to hell. most just go for fun without permission but they usually get in trouble.
MoshiMoshi's don't have to have horns they can just have human/animal ears instead! they say that animal eared moshi's are much more soft to cuddle and would be more acceptance about head pats ^^
Containers are filled with things they loved/liked doing in their past life, moshis bleed a lot due to the fact that their very fragile their blood can’t be used to donate unless their moshi’s, moshi’s grow their containers depending on the amount of one thing (for sweets the more Love the more it will grow, for bitters the more hate and sadness they feel the bigger they get, for normal Moshimoshi they grow with age)