I saw the countdown to their death

If you were reborn in modern Japan with the system, what would you do?
System: Scratch quests, help others, achieve yourself, give favors, and gain warmth.
Hojo Satoru: "No Madonna, no cerebral palsy, no trouble for myself."
System: Exchange skills, enrich yourself, pretend to be aggressive, and shine with brilliance.
Hojo Satoru: "Don't strengthen, don't shine, don't slap your face, work hard, enrich your life, and enjoy life quietly."
System: Treat your sister gently, open up your harem, and reach the pinnacle of life.
Hojo Satoru: "Treasure life, stay away from hatchets, children say I want everything, adults know that the body can't bear it."
Reborn in a remote village, Hojo Satoru, who believes in 'no pain, no gain', will put him in limbo after awakening the system, and resolutely refuses to touch the Pandora's box full of temptations.Self-reliance, self-reliance, and not taking shortcuts are the safest life options.
He was a work-study student, worked hard and was positive, and was admitted to Tokyo's "Aoyama Academy" with 75 personal deviations.
Everything was moving in a good direction, until one day, Hojo Satoru suddenly saw the death countdown hanging above people's heads...