Book 1 : main story pairing Ao x Ryoumei.
Book 2 : spinoff to Yume Musubi Koi Musubi. Second story pairing Shuuji x Takafumi as main story
Book 1 : pairing Shima x Togawa
Book 2 : spinoff to Doushitemo Furetakunai. Second story pairing Onoda x Deguchi
(some chapters included in book 1)
Book 1 : Ryu x Nao
Book 2 : an extra for Tight Rope.
Book 1 : pairing Kazuha x Hyoudou
Book 2 : spinoff 'Beast & Feast'. Pairing Nagai x Kitahara
Book 1 : pairing Rin x Ayumu
Rin and Ren are twins and they're fall for same cute kid named Ayumu. But even they're look alike Ayumu fall for Rin. In the next chapter Ren found another cutie named Shion.
Book 2 : spinoff 'Twin's Labyrinth'. Pairing Yuki x Sakaki
Yume Musubi, Koi Musubi