This is more or less what every girl is doing all the time on the main continuity, they are just freely showing their true faces here but they still have those God Tier poker faces that they spent years perfecting.
All things considered this might be the answer. Look at every woman we saw until now. Not being a crazy sexual deviant that hunt guys is probably taking most girls willpower anyway
Honestly the fact that on the start of the story he was just an aspiring mangaka and now pros are considering him ready for a debut does give an nice feeling of progress.