Box mouth returns with little change in expression...:[]

Koishi is deeply shocked in the last panel.

I never thought I'd see this series in this pool. This is on par with the Chen expression chart: Box-mouth and :3, the two universal facial expressions!

I want to see a Tenshi one of these.

Seems like Nishi Koutarou is parodying himself here (or rather his fondness for that box-mouth expression).

I laughed. I laughed real hard.

How do you make a "Mnnn!" sound with your mouth open wide?

You can if it's humming sound.

Yet, in her heart, she is deeply hurt.

He left her because she wouldn't shut her mouth.

I love how the "When he hits her" panel, she's more surprised as to how that patch suddenly appear there.

Wait, that's an open mouth? I thought it was red tape covering her mouth! >:(

Great, can't unsee, all I see is red tape.

This picture left me crying for days.
Look at Koishi's pained looks!
Just look at how she displays her emotion!

she needs the tag o□o

So far, this is the only picture in this pool that A) doesn't make me feel sad, and B) doesn't end in Yandere.

For whatever reason I read "WAH" in Hank Hill's voice and now I am dying.