I skimmed through the rest and it seems like it's a polygamy sort of situation. Ochako married Deku and bore 2 kids with Deku and 1 with Kacchan. Ofc, this is just an artist's hypothetical projection in a vacuum. In 3rd page she says she wanted to marry both guys.
Waaaah! Mommy~!Funny to hear it from you, Kacchan
Kacchan refers to Bakugou, not motherDon't bully Dekuko.Let me go!
Shitty Dad!My, my, aren't you a crybaby.