thank you so much for the video! i don't know thai but i tried my best to understand through a translator. i have their past history planned out but i'll see when or how i'll execute it.
spoilers
also, i'm glad you pointed out the flower meanings! other than what you mentioned for gentiana, i was thinking of gentiana scabra specifically, that could mean "i love the pitiful you".
for the other flowers, eternal summer means "we will meet again", forget-me-not means the same thing as its name.
the nobita dekisugi comparison made me laugh a bit. technically not wrong (from what i have read about them bc i never watched doraemon).