After the two year time-skip Makino is holding a baby in chapter 614 (From the Decks of the world Vol. 2) cover. Makino's age has not yet revealed but she was seen playing and enjoying her childhood 22 years before the storyline. Also, she was already an adult accompanying the mayor when visiting Luffy and Ace in the mountain.

Is Makino really the mother of the child???

YES!!! Oda have already confirmed that Makino is the mother of the said child in a SBS question. About the father of the child Oda just said "probably that person" and who is that person that Oda is referring to??

Is Shanks that "person"???

Years ago, Shanks goal

 going to East Blue, considered as the weakest sea, is to find strong individuals who would join his crew. One of them is Yasopp a badass sniper and father of Usopp. So what is he doing in Foosha Village?? Maybe they are just getting resources for their voyage or to have some good time. Then Shanks Met Makino and their romance started??

or

Shanks have already met Makino in the past and paying her a visit together with his crew.

Shanks is always sitting in front of Makino in the bar and they are pretty comfortable with each other even though Shanks is a pirate. Makino is popular as a beautiful lady in the town making her suitable for an emperor.

The Child!!!

Dawn Island is the home of strongest and weirdest characters with infamous bloodline:

Monkey D. Luffy - Son of Monkey D. Dragon, Worst Criminal in The World
Portgas D. Ace - Son of Gol D. Roger, Pirate King

and now

Makino's Child - Son of Shanks, One of the Yonkos

What if Shanks has the will of D?? Surely this child will cause a huge ruckus!!!


Again just a theory!!! Spoiler Alert!!!