がくえんゆーとぴあ まなびストレート!夏だ! まなびだ! 強化合宿だ!
Gakuen Utopia Manabi Straight!: Natsu da! Manabi da! Kyouka Gasshuku da!
SPECIAL G HD Sub 1
This episode takes place before the actual planning of the School Fair and shows how the girls spend their summer holidays.