“Base of the Sun”
“O-tento-sama no Moto” (お天道様のもと)

It is Konata’s birthday and she is happy to be a legal adult, because she can play adult-only games legally now. Later, Konata’s family decides to have a surprise party for her, but their plans end up failing, due to Konata’s co-workers also celebrating her birthday. Kagami forgets to buy groceries for dinner which angers her older sister, Matsuri. Kagami walks off in a huff to go to the store and Tsukasa comes to her aid with a shopping list. Upon returning home, they find their older sisters worried about them and Kagami cheers up when her sister shows appreciation for gathering the ingredients.