>>38520225haachama obviously. but actually she grew out of it. luna is a very close 2nd to haachama, but since haachama has gotten on meds, I would say at this moment in time it is luna. then also other chuuni members include peko, korone, ame when she was fun, kiara, and possibly council's fauna and mumei but I dont watch council so much.
oh and dont even mention tempiss to me in the replies, I dont care if one of those fags tries to be chuuni. but from the jp holostars then it will be astel.