Family Man System: Taking Care Of My Family Makes Me OP

Spending my life as an F-rank living punching bag wasn't enjoyable, but it paid enough to keep me alive. No expectations for the future. No desires for the present. Until they arrived. Standing outside my house beneath a street lamp was my first love, holding a child in her arms. Extending the child towards me she said, “You are her father.” On a random night, I became a father. They had nowhere to go, so I invited them into my home. However, that was when something even more unexpected happened. [Congratulations on welcoming your family into your home.] [Reward: 3LDK House Worth $50,000,000.] [Congratulations on feeding your child for the first time.] [Reward: Sword of Void (SSS-Rank).] I had awakened a System that rewarded me for taking care of my family. From that day onward, becoming the perfect family man became the easiest way to become the strongest. .... A/N:- He won't do things or take care of his family for the sake of any reward, he is just naturally like that. There is a bigger world of dungeons and guilds which would be explored alongside the slice of life chapters with his wife and adorable daughter. .... Additional Tags: Sudden Wealth Gain, Sudden Strength Gain, Child Care, Slice of Life, Dungeons, Overpowered Rewards, Not So Slow Romance, No NTR, No Yuri or Yaoi.