EPIC Side Story: Dragon Ball - Chapter 29: Secrets of the Universe

Chen Mo a game designer got sent to a parallel world with advance technology but undeveloped game concepts.

He adores her to the very core, sparing nothing, even risking his own life, all to provide a lifelong sanctuary for her and the child. She loves him as if he were life itself, desiring nothing more than to live and die together, never to be parted. With four lively and adorable children, a spirited mother, and a charming father, their story unfolds into a joyful and sentimental tale of happiness!

After an accidental death, in order to continue to live, Gu Bai had to choose to go through various wonderful books to complete tasks.

Every time he became a variety of small cannon fodder inside the story, Gu Bai’s code of conduct when completing task is – by all means, don’t be inferior, don’t be shameless, don’t be upright… hold on to a golden thigh.

… N times after transmigrating

Cannon fodder: (angry contempt) … You’re already so powerful, why are you still shamelessly holding on to a golden thigh to deal with us!?

Gu Bai: (deadpan) That… holding and holding… got used to it…

- Description from Novelupdates

Uzumaki Naruto wakes up one day to find out that his life has been turned into a RPG game, thanks to his 'Gamer' ability. What should he do about this? Smart(er) Naruto. Elements of Romance Games included in later chapters, so possible upgrade to M later