
To clear this up, the last panels of the latest chapter seems like a wishful thinking on dohyun's part. It was them being a normal couple if the incident didn't happened. But that doesn't mean that everything from CH 67 are his imaginations. No, you can check the dates on their phone, and it clearly says at the first panel of CH 70 that this chapter is in between 66 and 67. Meaning the scenes on CH 70 occur after CH 66.
Again with CH 70 (I got confused too, i might be wrong)