... Eyes & Rio ...

Eyes Rutherford ....
is 17 ; blade children ; pianist ; one of the most popular character in Spiral ; closest to Kanone ; show care and concern towards fellow blade children even though he looks cold ; can be referred to as Sasuke, Tezuka, Hiwatari and some other characters voiced by Ishida Akira

Rio Takeuchi...
is 17 ; blade children ; tsukiyomi high school 2nd year student ; good in making explosives ; short ; one of the most popular character in Spiral ; is in love with Ayumu's food ; keeps her promise

..& Their relationship

Eyes and Rio have been revealed as siblings. According to the time of birth, Eyes is younger than Rio. The both of them trust each other a lot as we all know that they (together with Kousuke, Ryoko and Kanone) have been fighting together since young.

Their relation? Honeydew or mostly known as melon. Apparently, melon is an such an expensive fruit that Kousuke cannot afford it. He always ask Eyes to buy melon for Rio instead and Eyes, being the responsible (younger) brother will (most of the time) remember to buy it for her. There was one time where he forgot but he went to the hospital again the next day to bring her the melon. Kawaii neeeee~

Judging by their characters, the relationship between this two is definitely highly potential. Both are very careful in their steps, but Rio trusts people too easily and yet, Eyes is the direct opposite of her. Moreover, Eyes, being the gentle type would not touch any sensitive issue on height (unlike Kousuke X3). Rio, being the 'scary' girl who wouldn't mind putting her life on the line, she could easily drive Eyes's fan girls away.

However, I would like to insist that their relationship is nothing more than very close friends. There's no hint in the anime or manga at all about their romance. But this fanlisting exist for their relationship, not their romance. So if you are a fan of their relationship (as friends or siblings) please do join and show your support <3