Sealed With A Kiss

After the DA stopped working Harry and Cho fall out of touch for a while. When he gets a box of chocolates and a letter from her asking to meet he's happy, but there might be more to it than meets the eye. Ron and Hermione see something's strange and react, but will there be enough time to stop a disaster? Written for Writer's Month 2022. Prompt #10: Kiss. Cross-posted on AO3.