User blog:Writting Reaper 24/The Snake of the Retaining Eyes

Spoilers to those who haven't read the entire manga

There's something that's been bugging me for a while now and I hope someone can explain it to me. We know that Ayano in manga route 2 got turned into the "Snake of the Retaining Eyes" and we know this snake was given to Shintaro. Aside from being a great twist and contribution to the story, I have a question. What happened to Ayano's own ability, the Snake of the Favoring Eyes?

Like did it disappear when her life was used as a snake or did it never leave? Is a snake possessing another snake? And if it never left does that mean that Shintaro also can use the power of the favouring eyes through the Snake of the Retaining Eyes?