User blog comment:Asuuki/Who has a stronger bond with Kirito?/@comment-27496644-20171212050335

It's not very easy. With Kirito and Eugeo, the type of friendship you're talking about is the "bonds of brotherhood" type, which is extremely different from the "soul mate" type. That being said, I think it's Kirito and Asuna's bond that's stronger, because they've known each other longer, in a real game of life and death. The STL isn't going to kill them, although it might for Fluctlights. Also, the "romance" type of love is probably more powerful than the "brothers" type, because lovers spend more time together, I guess.