A duo of assassin knight maids that will serve you well then kill you without leaving a trace. A bonus picture is included where Dark Meta Knight is leaving too much of a mess during work so Morpho Knight has to stop him, all while the victim dies happily. Why is the character limit for titles so short?

Extended lore:
DaMeta and Morpho are assassins who work as a pair. They're sent as regular maids, then kill their target when the time is right. DaMeta stabs his victim until they're dead, then Morpho gets rid of the body by absorbing it and cleaning any trace it might leave. They're surprisingly good at being maids, which helps them gain the trust of their target. DaMeta in particular likes getting really close, even affectionate with the victim because it makes the kill more satisfying to him, but Morpho sometimes takes on that role in DaMeta's place if the victim has a tasty looking soul or she's fond of them.
If for some reason DaMeta doesn't want to land the kill, like when the victim doesn't like/trust him, it's too difficult to kill them or he thinks it won't be a fun kill, Morpho will just directly absorb the victim's body and soul, only hurting them beforehand if necessary. DaMeta's kills can get very messy which often upsets Morpho since she's the one who has to clean up the bloody mess, so they often have fights when they're off duty. Outside of that issue, they work well together and get along just fine.

Previous duo of knight maids:
Batte Maids Meta Knight & Galacta Knight: pixiv #90105806 »