uh i dont rlly get the last chap????

Uhm hopefully u mean the actual last chapter and not the extra lol

But basically he got married and they couldn't be together, and it's the story of the professor of the lab if u read the other book, so blonde is the old man prof and he meets the grandchild of his love and he welcomes him into the lab saying he's been waiting and it shows their past selves

aye thats sad （/TДT)/
but thanks for explaining tho