The Synthesis Ascension: Ascent of Puppet Beast

MC was died by drowning in Lake while touring with his college.
His soul floated and accidentally sucked in by a wormhole, which teleported him in front of goddess of another world.
Because of his lack of attention and no respect he was cursed to be born as a puppet beast.
MC was reborn in tattered puppet lying in the middle of the jungle filled with giant beasts.
Puppet body was so tattered that it can't do any other actions except looking through puppet eye.
After spending 50 years alone, because of an accident he get to know that he has a synthesis system, he can synthesise any ability to himself as long as he has enough kinetic energy.
After getting an ability by accident he used it to recover and roam in forest and was chased by beasts, he fell into water and wa sucked in by another wormhole and was teleported to unknown castle and he met a girl, unknown to him that she is the goddess who cursed him to be reborn as a puppet and now she has lost her all powers due to scheming of demons.
We will see the journey of two enemies unknown to each other supporting themselves in this dangerous world.
What will happen, when MC will know that the girl he has spent quite a time is the goddess who he wanted to make his 'B*tchy'.