A former general doctor dies in an accident and meets a R.O.B. who tells him that he will be transmigrated into another world and would grant him one wish as long as it amuses him. The doctor seized the opportunity and tells the being that he wanted to be the embodiment of the concept of grasping. This way he would be able to grasp his dick better. The R.O.B. laughing up a fit decided to grant him the ability and sent him off.

New sequel in writing: The concept of games (This one is not an isekai)

The first route of my isekai series: The intelligent one.
(There are a total of three routes in this series, it is a shared universe. This series symbolises 3 ways an isekai can go, from mortal to the highest level of existence.)
1. The intelligent one
2. The gifted one (Writing in progress)
3. The forced one (Writing in progress)
Alternately,
1. The one that doesn't want to die.
2. The one that cannot die.
3. The one that keeps dying.