Warikitta Kankei desukara - Vol. 3 Ch. 11 - wonderwall.

[The_FallenAngel]

I wouldn't say Yoru is nice, not at all. I wonder if we'll get the reason she just said okay to her and Sei doing the sheet tango. That's not something you're just okay with because you know she loves you.

That last part, are her feelings really changing after all this time?

 

[redscizor]

I can see Haruki ending up as Sei v2.0.

Yep, Sei is the problem =(
Both friends is breaking their friendship now by Sei, and repeat the cicle