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Shinonome is Qilby's sister dragon who has the ability to remember her past lives, like her brother.
She was killed during Orgonax's attack on the new Eliatrope civilization in -10,000, though it is unclear whether she was killed by Orgonax or during Yugo and Qilby's duel. She was confined to her Dofus during the events of the Wakfu series, guarded by Phaeris in the Crimson Claw archipelago.
Shinonome is a ruby-red colored dragon, and her adult form has a set of horns curving from her forehead, and another curving backwards from her lower jaw. She has a small horn on her nose, and two long whiskers. She has gold eyes, a gold gem on her forehead, and a yellow stripe that starts as a swirl on her cheeks and runs the length of her body. She mainly appears as a silhouette inside the red Dofus.
It's unknown whether or not she suffers the same maddening existential pain as Qilby exhibits due to the siblings' eternal memories. According to Qilby, she is the only one who always supported him, whereas the rest of their siblings were allegedly somewhat neglectful towards the all-remembering Eliatrope. It's implied that she supported Qilby's machinations that led to the Mechasm war and the Eliatropes' exodus, but millennia after her death and return to her Dofus, she appears to have changed her mind, telling Qilby during the fight in Emrub that he needs to stop and has gone too far. She shows during her last conversation with Qilby in Emrub that despite initially supporting her brother, she'll put the overall welfare of the Eliatrope people first since it's clear that Qilby's mad crusade has already cost their people too much. Compared to Qilby's selfish desire to keep himself stimulated, Shinonome questions whether or not the massacre of their people was really worth the results.
Islands of Wakfu
Shinonome never appears directly in the game but is implied to have supported Qilby until her death. It can be assumed that she was killed by Orgonax or someone else before Qilby's duel with Phaeris and Yugo. She has one quote on the loading screen, which references her brother.
During the Wakfu era, Shinonome is still in her Dofus, having been unable to reincarnate for 10,000 years due to Qilby's imprisonment. Her Dofus is fought over by Yugo and Qilby, before being used by Qilby to open several portals. During the fight in Emrub, she communicates with Qilby although she is still inside her Dofus, and asks him to stop fighting against Yugo since the cost of his quest is too high. When he doesn't give up, she releases a blast of Stasis from her Dofus that severs Qilby's Eliacube arm, essentially ending the fight. Shinonome's Dofus is left in the care of Balthazar. Somehow her Dofus makes it out of Emrub before the events of the OVAs.
Shinonome is Qilby's dragon twin, hatched from the same Dofus. They share the ability to remember all their past lives, aside from their other siblings. Before the fall of the Eliatrope civilization, Shinonome supported Qilby's goal of returning to the stars. She was ultimately responsible for literally disarming him, allowing him to be defeated by Yugo.
Shinonome helps Yugo in the fight against her brother in Emrub after reasoning with him doesn't work. In their previous incarnation, it can be assumed that Yugo and Shinonome were enemies because she agreed with Qilby more.
Orgonax is potentially responsible for the death of Shinonome in her previous life.
It can be assumed that Shinonome and Efrim had the same mentor-student relationship that Qilby and Nora had prior to the events of Islands of Wakfu since the twins seem to share the same roles (Mina and Phaeris as mediators, Adamai and Yugo as explorers and presumably kings as well).