i just finished it now and it's actually really gooddddd, very enjoyable and sweet, the actors suit each other sooo well !! i recommend to give it a try !
i was feeling the same way, but their bond was strong i'm glad !
hahahaha i was a lil worried too when i was first watching it, but i felt so happy and relieved that they did not waver or question each others love, they love each other sooo much it's so cute !!!
honestly without the whole body swap concept their love story would have been much better, it's a lil hard for me to overlook that he is a grandpa, no matter how hard i tried to scratch it, everytime i remembered how the grandpa looked i was like oh wait this doesn't feel right. but i really love the actors together and their chemistry, so honestly i wish they could get a show where it's just them, same age, falling for each other instead of this whole 69 yr old grandpa and this whole reincarnation thing !!