The older sister who is tough on the outside and soft on the inside × a scheming love-minded dog. The two people who met when they were children were mortal enemies, although it was only the male protagonist who was violently beaten one-sidedly. Later, the separation caused the two to drift apart. Who would have thought that they would reunite unexpectedly when they grew up, and the first thing they did when they met was to get married. Well, that's great.
At the beginning——
"Being roommates"
"Of course"
Later——
I get jealous when my wife meets someone else
My wife doesn't look at me, I'm jealous
My wife disowns me and I feel sad
My wife beats me, I feel happy, and so does the other side
My wife asked me to call her sister, I'm so happy
When my wife calls me my name, she must be trying to seduce me.
My wife just breathed, wow, this is definitely a naked seduction.
Ps: The heroine is a year old, but only a few months behind.