Talia

The Pain Blighted, whose ability allows her to link with anyone she sees, at which point she and her target will share any injuries either suffers. Given the nature of her power, she often harms herself as a tactic in battle, earning her the name "Talia the Hundred Pains." She has a self-sacrificing personality where she will endure pain willingly for the sake of her friends. She loves gossip, and often takes care of Ren as the only other girl in the guild.

(Source: I Was Reincarnated as the 7th Prince so I Can Take My Time Perfecting My Magical Ability Official Site)