I mean, we have a girl here who is properly terrified of her knife-wielding girlfriend and who, to remove any doubt that she has reason to, has been proven to have been punished before for merely using her name instead of nickname. Pretty sure yandere applies without much need to question this.

Keeping a yandere happy is dangerous business...

Natsuko loves Rika's boobs the most in the whole wide world.

I can't believe they're all dead... :D

Covering for the clueless monster is hard... :D

Beloved wife, eh?

Clueless monster doesn't know about pyjamas either... :D

How are those barrettes mouth-shaped?

Either just being open in the center, or even more likely, being somewhat shaped like the kanji for mouth (口).

Heartwarming. ^_^

Lovely. ^_^

Cute.

Adorable. ^_^

Nice.

Adorable.

Impressive.

Cute.

Very nice. ^_^

Nice. :D

Adorable. ^_^

Cute.

Finally got what she was asking for. :D

Lovely.

Cute. :D

Cute.

Way to misread the situation... :D

And Mai-chan making the Hitomi-chan face, repeatedly, is just hilarious. :D

Mai-chan still the coolest. ^_^

Well, I guess that's one way to get her to realize her own feelings... At least this didn't go down the It's a Detached Relationship. route.

Adorable. ^_^

Obviously, the more yuri premises, the better. :-)

Obviously.