Shokushu Ningen ~Osananajimi Hen~

Once every 97 years, the Tentacle Tree bears fruit.
It grows densely along the back property of the Rupee family.
From childhood the legend is told, but no one could confirm it was true.

These are the adventures of a hero who ate that fruit.
Its transformative powers made him a human monster.
You are that hero! You are... Tentacleman!

[From DLsite English]