Hyasi and Onani Arakawa are twin sisters. Ryota Takayuki has been their best friend since birth. The three were almost inseparable. It was obvious that Ryota liked Hyasi more than Onani. But Onani loves Ryota, even though Ryota loves Hyasi, and Hyasi doesn't care. But eventually, the inseparable three became the inseparable two. It was just Hyasi and Ryota now, but he would know one day. Who Hyasi really is. Where the third member now lies, and the secret that's been kept in the Arakawa family forever.
Keep reading to find out.