Help! Gin and I Share the Same Feelings!

I am an ordinary male college student. Maybe it's not that ordinary. In fact, I am a retired master space mission worker. I'm tired of the endless beatings and killings with no peace, and I'm quite afraid of pain. So I dealt with them all and chose a peaceful modern world to retire in. Suddenly one day, a familiar pain came from my shoulder - like being hit by a bullet, but I was not injured. A system suddenly appeared, and he told me that I felt the same way as others. From now on, it hurts me when he hurts, and I won't be happy if he's not happy. If he dies... I can't die if he dies, but I can feel the pain before death. I am angry. The system has also been resolved, but the empathy has not disappeared. I also found the man who shared my feelings. I want to kill him. I didn't kill him, but I locked him up. He is not happy. I let him go. …I feel so much pain, I can't let him get hurt. ---- Everyone who has seen Ueno Makoto risking his life to save Gin many times: I am hopeless in love. Purpose: Everyone must live bravely, happiness may be just around the corner