In the world of stones caused by a petrification thousands of years ago brought humanity vanished to stones.

And today, you're revived by the Kingdom of Science, in the same place not far from your Lover's, Ryusui Nanami.

He's been waiting for this time to meet his Lover once again, you. And within the fluid poured on to you, you're back again.

"My precious treasure." Ryusui said, holding you in his arms.