[RJ263866] AneOni Island

The protagonist Chihilo grew up in an orphanage after being discarded by his parents.
There, he meets and falls for an older girl named Hikalu. When Hikalu is unable to find work
or a place to live after departing the orphanage, Chihilo arranges for her to stay with him at his apartment.

Even so, they still remain roommates, rather than lovers.
So, when he finds a flier for a Couples Challenge Tour in the mail, it’s his chance to finally make her his lover.

But on the remote island they end up at, an unexpected sexual fate awaited Chihilo…