Sylvie

Sylvie is the Guild's gatekeeper, where she keeps track of the Portals.

When you first meet her She will offer you a free teleport stone. Refusing it will raise your relationship with her by 20.

Like most other Town NPCs, Sylvie has a few unique aspects to her. First is the unique skill that the MC learns once relation hits 100, which is used exclusively with them in battle. With Sylvie it's Conduit, which moves all temporary effects from her to her neighbours. She also has an extensive array of abilities, from LifeSteal to Agile to Cooking and even producing materials. Sylvie's unique genetic trait, Unstable, even gives her utility at the Farm by allowing her to breed any Base Species. With a Max Level of 20 and able to deal True damage, Sylvie's one of the few Town NPCs able to stay relevant in combat beyond the early game.

Otherwise she will have quests for you like all the other Town NPCs, rewarding you for giving her reports on the Portals. Sylvie can also train your units, able to grant Magic Vision to a unit for a large sum.

She has two Town event in her room. In one of them you will discover that Sylvie and Castalia have a working relationship, wherein Castalia sends her erection through to Sylvie via a small portal. Sylvie will offer you half the money she gets for taking care of Castalia's "problem" if you join in. Refusing will reduce your relationship. In the other you can catch Sylvie in the middle of being "assaulted" by tentacles. Choosing to ruin her fun will also reduce your relationship. Creation gets an extra option here.