Did you heard that Mr. MC? Emma said that she loves you, now you had the obligation to creampie her tiny cunny until she's full. Oh and the older sister could join too I guess
Let me check the flag
Yukata : check
Summer Festival : check
A hidden place along the Shrine : check
Man and woman watching fireworks alone : check
Therefore i concludes that the next chapter they will bang behind the shrine
Remember boys, don't stick your dick in crazy.
BUT
Incest in wincest
And
Age is just a number
Therefore 2 against 1, knock her up and keep the bloodline pure Oniichan