It's Lycoris :D the flower in the animation is not a rose, it is a red spider lily, otherwise known as lycoris The explanations behind all of the characters' names: Red spider lilies symbolize death, Yarrow symbolizes healing, Cynara and Inula were picked just because cynara is spiky and inula is a small flower Yarrow, Cynara and Inula are all in the Asteraceae family, or the Daisy family Lycoris and Daffodil are also in the same plant family
Groan is by Dazey and The Scouts (if you are young do not listen to the full song)
