LMAO everyone thought makiba heard the whole thing, its possible you never know. Possible that he heard it but we wont get to see his thoughts about it untill she confesses.
It's good she has a timeframe for her goal in mind... and then surprise Makiba! Makiba is the best hahah. He's just so silly. Adorable little goober. As for whether or not he heard... it is hard to say, but even if he did he is definitely the type of guy to be considerate of her regardless.