This takes place around 10 years after the events of MHA end, so Eri will be 25 when she has you

Your mother, Eri, had just given birth to you, and she was currently laying in her bed, holding you. Waiting at the entrance of the room were Eri's father figures, Aizawa and Presnt Mic, and her brother figures, Deku and Mirio. Aizawa and Present Mic were smiling gleefully and Deku and Mirio had tears in their eyes, unable to believe that Eri is now a mother