A cliffhanger is generally when tension is built up and then left abrupt unfinished. The viewer is invested, but there’s no closure, no release of tension.
You’ve go the abrupt halt, but you don’t have the first part, at least not for me. I have no investment, there’s no tension, and I don’t mean to sound rude, but I’m just plain not interested in this at all.
First, I’m going to assume this is a fanfic based on My Hero Academia. I know the name, but I’ve never watched it, so I have no point of reference for anything you’ve included. Now, this could just be my personal method, but I would still want a fanfic to introduce newbies into the world. I’ve read fanfiction for works I’ve never read or watched, and some of them have been great, introducing me to the concepts of their base material. You don’t have to do this, but I would suggest that you write your story as if the people reading it have no idea what My Hero Academia is. If nothing else, you’ll get more readers that way.
Second, and this might be part of the first, but you could probably give some introduction to the characters. I’m totally in support of starting right in the action, but even a line or two can go a long way to helping the reader (me) visualize what you’re talking about. The only “Deku” I’m aware of is from Legend of Zelda. And introductions aren’t limited to the characters, but the world too. Where are they? In the distance from where? What were they doing together when they saw the woman? And if the woman is going to turn out to be someone in particular, you’d better not just name-drop and leave it at that; I’ll have no idea why that’s significant.
Finally, the whole point of replying to you saying it’s a cliffhanger. You gotta build tension first. Are these two out in the park on a regular day? Are they in a warzone? Would they normally be in danger, are they in a bad part of town where a woman crying for help might not seem to surprising. You can’t just say someone is worried and expect me to care, you need to show me why they’re worried. What they want to happen, what they think might happen, why that’s worrying, how it could go wrong.
[Edit before posting] you’ve now edited your post to say the woman is Uraraka. I have no clue who that is. How do they know her? Is she someone special? How did she turn them into babies? Is this a surprise, or is she normally capable of such things? Hell, I don’t even know what she looks like.