Expelled as an E-Rank Healer, But Healing Monsters Gives Me +9999 God-Tier Stats!-2

What the story is about

After awakening as an E-rank Cleric, Lin Ye is expelled and dismissed as a failure—but his hidden ability lets him gain permanent stats and talents by healing monsters. He joins the dangerous Black Dragon Academy and turns its missions and dungeons into opportunities to grow far beyond what his class or level should allow.