Is there a translation for this 1?

Base +4, mainebluesuperman +7, colddish +1, shinryu1284 +6, inflatedsonya +5

Technically incest, because they (Natsumi/twintails and Aki/ponytail) are being impregnate with Fuyuki's sperm.
(Aki is the mother of both Natsumi and Fuyuki, FYI.)
It's even explicitly lampshaded on page 7 (Cream Lemon and Sister Princess have strong incestuous themes), and Fuyuki is even protesting the proposed plan. (Keroro, being the scatterbrain that he is, insists that no direct intercourse will take place between family members, so it doesn't violate the societal taboo. Natsumi immediately calls BS.)

Base +2, Gabygabycandid +6