Felt-chan Saw (フェルトちゃんは見た) is a shop exclusive limited edition short story. This was later adapted and included in the Re:Zero Ootsuka Shinichirou Art Works Re:BOX.
The story takes plays 10 days after Elsa's attack in the capital city Lugnica.
Felt walks into a room where a woman is sleeping. Suddenly, Reinhard walks in and explains to Felt that the woman who's sleeping is actually his mother, Louanna Astrea, who is diagnosed with a strange disease called "Sleeping Beauty" (眠り姫 Nemurihime). Felt asked how she got the disease, but Reinhard sadly responded that nobody knows the reason and that she is from 17 years ago still sleeping.