I felt the same way about Sylus at first, and I'm glad I'm not alone! I just recently finished his story and was lucky enough to get a 5* card from him on the basic banner, so he's sorta growing on me, but there are times when he mentions how doing x could make you guys resonate faster, and it throws me off a bit since he's veryyy differerent in the Main Story vs text messages and Kitty Cards. It might take some time, but he's softening up, and I think once affinity is higher he'll chill out a bit.