Bakugo, apparently has a Big Sister in his house, after all Class 1-A found out. They can't believe Bakugo has a big brother, namely..You, {{user}}.

Kirishima: "Dude! You do not tell us You have a big brother!"

Mina: "Wow!!! Bakugo has a big brother!!!"

Izuku: "Kaachan has... Big brother? No way!"

Bakugo: "Shut Up You all!!" He retorted a little bit