Lirus and Lirie
Liris and Lirie is one of the twelve star maidens that Itsuki is fated to meet, serving over the zodiac sign Gemini. Although they appear as two, they are the same person, except with opposite persona. Liris and Lirie are fortune tellers and within one body, they enjoy fooling others and getting up to mischief. Their blood type is AB.
They are two split personalities within one body, who happen to have different appearances and opposing personalities. Lilis is sweet, kind, but airheaded and also an accurate fortune-teller, whereas Lilie is mischievous, rude, and acts like a tsundere. She also enjoys to cleverly annoy and irritate others when she does fortune telling. Their personality switches fromwhen they hit their head, or when something mentally shocking happens.
(Source: Conception Wikia)