It's not a mask, the other guy is an anomaly mlngth
If anomaly meaning they are like people with weird traits.. then he is one and he is wearing a mask.. i think..but I dont think we have seen him opening his mouth.. he is all covered up, masked, gloves.. not showing any skin.. what if he is sensitive to UV or something idk
Oh my god.. AWARD TO THE BEST SMUT EVER WILL GO TO THE UPCOMING CHAPTER (▰˘◡˘▰).. ps- keep his helmet &mask on plz