Taken from Futakoi Alternative 8
curses references from the first Futakoi. Remember Billy the goat? Yea, he was a great goat, he always fights with the lousy main guy of the first anime series.
Taken from Futakoi Alternative 6 and Futakoi 1
Apparently, Futakoi Alternative took funny reference to the first Futakoi series by leaving this special bit by Lulu and Lala:
The original Futagozuka (Twins Mound) as shown in Futakoi: