Hmm, the right bubble on the last panel is slightly off. That's 'motsu', not 'matsu', but I guess it's kind of a 'How long do you plan to use these tickets', or maybe you could say 'how many of those tickets do you have' - indicating that Yukari has infinite tickets and plans to use them nonstop, forever?
Probably, it's simply that Yukari has had them forever. After all, it is the verb "motsu." So literally, "how long have you had those things?" I'll change it to that for now.
I think its just Yukari being involved, since my guess is that those ticket Chen gave Ran are handmade and I think Ran did the same long ago and Yukari still has them. Kind of like proof of their bond and how Yukari still remembers it.
For Yukari-sama only!
Shoulder Massage TicketForever.Ran-sama! You work so hard doing housework every day, so I'll give you these!Hmm? What are these...Ooohh! Shoulder massage tickets!Thank you, Chen... I'll make good use of them...Ra...n...These just came out of my gap...How long are you going to hold onto those things?