I'm glad for the development, but you're telling me all those frames of Miu looking sad these past chapters, even when no one was around for her to need to fake the sad emotions, were all just completely fake? And the part where she was glad that Takkun remembered the promise was just glossed over in the previous chapter and not explained...
I'm glad that Miu is removed as a rival (or I guess she never was technically), but it seems just like a quick and lazy solution