I feel like the author isn't fully aware what the difference between social anxiety and introversion is. Or maybe it just translates poorly between languages.
Wanna know why the "Kamen Rider 555" tag is added to this drawing? Well, let me spill it to ya.
If you look closely at Tabemi-chan when she makes a call, she is seen holding the same cellphone that is used to transform into Kamen Rider Faiz, minus the belt.
Yes, really. That is all I could say on it. Hope you all understand where I am coming from with this.