Haru Estia/Shadow Walker

Haru Estia's Shadow Walker is the embodiment of her SinForce during her time in the Great Void. She has the memories of Haru's time as a SinWorker and before the Void. It has a tremendous hatred for the Great Void and wishes for its destruction. The Shadow Walker does not get along with Haru.

## Background

Haru first encounters her Shadow Walker during the events of Scaredy Cat Radar where Kant produces a shadow copy of her. It appears to assist Kant on the promise of being able to obtain its own body and taunts Haru for being a marionette and forgetting about revenge. Ultimately, it becomes unstable and then vanishes.

### Advancement

After obtaining a fragment from a Blazing Void, Haru uses it in order to visit her true self and encounters her Shadow Walker. It is initially annoyed with Haru and demands her body back, wishing to freed from the Sunken Grave. Haru questions what happened in the Great Void to make her act like this in past. The Shadow Walker answers that Haru's power is not intended to save other but is used to destroy the Great Void for the sake of revenge. Only by annhilating everything within her path, can Haru be freed from her pain. However, Haru does not understand the source of her desire for revenge. The Shadow Walker lashes out against Haru in response claiming that her memories have been altered as her mother was not sick and was killed by the Great Void and blames Haru for forgetting about her dream as a doctor. Haru is confused with the response and decides to return to Rucco Town in order to find and answer.

After talking to Voy and Seoni about being a doctor, Haru heads to Candus City to find another fragment to talk her Shadow Walker again. She encounters Luke III and Aaron who have been consumed with revenge and attempts to stop them from pursuing revenge but fails. Instead, she pursues the fragment and talks to the Shadow Walker once more. The Shadow Walker is willing to talk to Haru as she has the spare time. Haru attempts to get the Shadow Walker to stop pursuing revenge but blames Haru for not being able to understand her past's feelings. The Shadow Walker states that Haru's strength only comes from revenge and she would eventually become like her past self. Haru states that if she is not able to use the power of revenge, then she would become a doctor instead. The Shadow Walker goes tired of the conversation and tells Haru to leave.

Afterwards, Haru heads to Grace City to discuss with Toru what to do with the aspect of revenge. Haru is settled with her answer and looks for another fragmnet to talk to her Shadow Walker. Haru then questions the justification for her past revenge stating that her revenge is not special from anyone else who lost their beloveds. The Shadow Walker states that it has gone too far and there is no turning back from its current path. Haru denies this and states that the world has changed and that there is a way for her past self to be accepted. The Shadow Walker denies the possibility and Haru decides to seek revenge for the Shadow Walker's sake to defeat the Great Void. The Shadow Walker remains in disbelief but would continue to watch over Haru if this decision was correct.

### SinWorker

After absorbing Erwin's clone, Haru enters the Sunken Grave to ask for her Shadow Walker's strength. The Shadow Walker is annoyed with Haru asking her if she has made any progress on her previous promise. Haru states that she hasn't made progress but asks for the Shadow Walker's strength. She states that she did not make the previous effort to understand the Shadow Walker's desire for revenge and would wish to accept a portion of its revenge to understand it better. The Shadow Walker agrees and lends its strength to Haru but warns that it will take over Haru as she continues to use more SinForce. Haru manages to control SinForce better and is able to manifest clothing from her past self. She states that clothing is too revealing and is embarrassed about the thoughts she had in the past.

After Haru is able to control SinForce without the clothing, she asks Shiho if it possible to create another fragment to talk to her Shadow Walker once more. Shiho states that since Haru is now able to control SinForce, she is able to summon her Shadow Walker at will. Shortly after, Haru summons her Shadow Walker by the Dirty Shelf where the Shadow Walker is angry with her. It did not expect Haru to continue erase and restore its power by using VoidForce but states that inevitable result would be the same. The Shadow Walker reiterates the need for revenge against the Great Void and blames Haru for ignoring it. Haru states that this is only one step for preparing for revenge and states that is better with pursue revenge with multiple people rather than doing it by herself. Finally, Haru promises her Shadow Walker that she would eliminate the Great Void and Kant. The Shadow Walker becomes silent and vanishes.