Don't Push Me, or I'll Explode!

Others traveled through time and cheated on cheats, but I traveled through time and received a terminal illness notice: frail and sick, and could die at any time. Traveling back in time as the third son of an earl, Chris enjoys a private room with a cute female attendant. The tutor is there immediately, but unfortunately before he can react, he is forced to participate in some noble trial. In order to survive the trial and cure his illness, he worked hard to learn knowledge and magic. When the enemy approached with a grin, and when the conspiracy enveloped the family, Chris silently held the pendant on his chest tightly. "I'm warning you, I'm not in good health, don't irritate me." "Come here again... I will explode on the spot, right?" (Western fantasy, no system, no cheats)