The scene where they're all reunited around their guide is very touching and the one who said "my love" is Coda.
Hyoseop, knowing his sh*** past with his former espers is very insecure, no wonder he feels like sh** compared to Piano who is Andante's brother and SS guide.
If Hyoseop is a very talented S class guide, Piano is far above him and this is why Andante always has doubt about Hyoseop's abilities to guide him.
Poor Hyoseop now understand why Cecil rejected him, they were all loyal to their guide and somehow, he's feeling guilty to take his seat.
Just to clarify things, piano is not an SS class guide, he just has an ability that amplifies the guiding compability with espers, thats why they all liked him. But on the other hand, Hyoseop is in fact an SS class guide, but the problem is that because of his past and that sh*** esper, he didnt get reevaluted one, since he presented as a guide for the first time, which is why nobody knows that hes an SS class guide(not even himself 😅