Invincible I Am Not the Protagonist

Invincible, I am in a small town, looking for a protagonist of this era. Someone who broke off their engagement, feels like? He was careless. When he jumped off the building, he didn't pay attention and died. Fortunately it's not the protagonist. The protagonist cannot die. The girlfriend next to me, the daughter of a wealthy family, was left in an orphanage when she was a child, so she must be. Well, she is invincible except for me, and she is more stubborn than me. The protagonist is not supposed to cause trouble. Why does she get tired of being around me every day? Oh, oh, protagonist, where are you? Come out quickly. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.