I am trying to find the name of this Yuri manga I read a while ago. In it, a school girl encounters a captivating older woman on the train and follows her out. They get to know each other and... shenanigans ensue.

There is also a sub-plot about another Teacher-student yuri couple.

P.S. This manga is pretty adult so I am not sure which sub-forum this topic should fall under. Please move if inappropriate for this one.

Hobbies include impersonating fictional characters and sucking on ketchup packets.

Distant evening mist by Asagi Ryuu