HISASHIBURI NI ATTA INAKA NO ONNA TOMODACHI ISSEN KOECHAU

Every year during summer vacation, Riku-kun heads to his grandfather's place in the countryside

There his female friend Nacchan comes over to say hi and play with him every year.

A year has passed since they last met, and Nacchan has become very attractive...

Nacchan doesn't act any differently, and she gets nice up and close with Riku-kun.

His heart is racing with excitement.

On the other hand, Nacchan is attracted to Riku-kun's new found manliness...

and eventually the two childhood friends cross the line and go all the way.