A first-year schoolgirl who is Golden Darkness's little Sister. Mea has the same abilities as Yami does.
Mea was a weapon created by Tearju and known to be Yami's Little Sister which means she also have the ability that Yami Have. She was sent to Earth by her Master ''Nemesis'' To bring Back Yami's Past of Being an Assasin. She enrolled to Sainan High to keep her Eyes on Yami, on the First Day, she she was alone at the window until she met Nana and became friends with her, they talked to each other knowing that Nana have powers to be friends with Animals.
Mea's Transform Abilities are more powerful than Yami's, she can even turn her body into a powerful energy weapon that Yami didnt have. Even though she think herself as a weapon. She still have a soft side, as shown when Nana tried to Cheer her up and Released all her animals from her Dial, The Animals Went out of control and the Dial For the animals is taken away by her animals, Nana Went After it but a Vehicle came out of nowhere is about to Crash to Nana, Mea Saved Nana Faster Than Momo, Then Yami and Lala came to stop the Van and stop Mea From Killing The Driver.
Mea Always Ruin Momo's Harem Plan on Rito. It happened When Momo Was trying to Make Yui and Rito be alone in their house, Momo made a barrier that will prevent Lala,Nana and Mikan to Enter since Yui and Rito is in there, Mea Shoot out a Laser from nowhere with her trasformation ability to destroy the Barrier and to ruin Momo's Plan. Another is When Momo invited Rito to go to the storage room alone, when Rito enters, Momo Started to do ecchi things to Rito, Mea told the VMC (Momo's Fan Club) that Rito and Momo were alone in the Storage room and also destroyed the barrier that prevents someone from comming in to ruin her plan.
The only thing that Mea remembers in her past is when she was at the Destroyed Reaserch Facility. She doesnt know how she was born, at that time she met someone, it was her master ''Nemesis'', she told Mea that she was a transform weapon and also taught Mea how to live, how to use her ability and Guided her thats why Mea Believes that it is because of her master ''Nemesis'' that she was alive. Mea also Believe that the only one that understands her and Yami is her Master ''Nemesis''.
Mea became best Friend with Nana, She also became friends with the girls who always sticks to Rito even though she also have sexual feelings for Rito, she always wanted to be licked by Rito as shown when Oshizu possessed Mea's Memory. Oshizu also seen something in Mea's Memory about Her Master but Mea found out that Oshizu is possessing her and also warned her about it. Her Master's Plan about bringing back the Old Golden Darkness is still a Mystery.