Stertbooks Coffee

Stertbooks Coffee (known as OKAYADO Coffee in the OVA) is a coffee shop from which Kurusu Kimihito buys coffee from.

The shop has a very large menu and each girl who lives with Kimihito has their own favorite drink which he has memorized, including: Caramel Machiatto (Miia), Sweet Cappuccino (Papi), Soy Latte (Cerea), Mocha Frap (Mero), Large Water (Suu), Black Coffee (Rachnera), and Black Ice Coffee (Lala, but only in the anime).

As most of the shop's drinks contain caffeine, Rachnee, because of her spider biology, quickly becomes drunk when enjoying their products.

Trivia

 * Stertbook Coffee is a parody of the coffee franchise.
 * The shop is referred to as "Okayado Coffee" in the OAD episode.
 * In the OAD episode, Papi receives a Sweet Cafe au lait when Kimihito is handing all the girls their drinks, while in the manga, she receives a Sweet Cappuccino.
 * In the OAD episode, Kimihito gives Lala a Black Ice Coffee, but in Chapter 26, strangely enough, he didn't have anything for her. This may have been because Kimihito hadn't known Lala very long at the time and therefore perhaps didn't yet known what her favourite drink was. Still, it's an odd detail that he ignores Lala, especially considering that Kimihito is always thinking of others, which is a theme throughout the whole manga series.