[paTKany]

Spoiler for Episode 3,4:

Trivia for episode 3:

"Oshare Tantei Lovely Chocolate"
The heroine of this fictitious series has a strike resemblance to Behoimi (magical-girl form) from Pani Poni Dash.

and a minor one for episode 4:

Sign on the wall: "Karaoke Kirara". The Hidamari manga serialised in the Manga Time Kirara Carat magazine.