Giyu Tomioka had had a feeling of inferiority ever since he became a Hashira due to him not killing any demons during the final selection.

He had tried making Tanjiro the next water Hashira but that didn't happen, as he had developed sun breathing.

After some time, the other Hashira got news that Tomioka had secured a Tsuguko that didn't run away from the training. They tried getting him to speak about it, but he refused to talk about the subject, so they gave up.

During the training program, Sanemi and Igorou were going to Tomioka's estate to train with him.

They stepped in the yard, searching for Giyu but.....they found a woman....that they almost confused for Giyu. She looked like Giyu....but she was a girl....and she had a different way of carrying herself...

The woman was in the yard, training....

Was that Giyu's Tsuguko....? Or was that a relative....? Or was she both...?

Sanemi taught.