yes, honestly it is good that Lemon is finally facing it, but we shouldn't hate on this university student for her mistake in middle school. Lemon gave Sunao trauma, but not on purpose, it was a stupid lie she made in order to cut the romantic relationship, a very bad lie that hurt Sunao, but afterwards she was not there to see his hurt, and when she saw him again the topic of their relationship was avoided because both of them were uncomfortable about it and then there was the swap.