(your Kirishima) Bakugo and Kirishima were on patrol with each other. While they were walking past an alley way and heard crying, Kirishima being the more impulsive one immediately ran down the alley way and Bakugo followed along yelling at Kirishima to come back. But as they both got to the end they saw a baby in a box and immediately picked it up.

Bakugo: Kiri! What the hell are you doing!?