I believe it's based on Humikane's headcanon "What-If" of Eila and Sanya in 1947 where mankind has defeated Neuroi. Eila has gotten more confident, I suppose.
Description: Young Nozoli brushes Nozomi Jr.'s hair while holding hands with her sister, Elizomi as she stares at her parents, Nozomi is feeding herself while Eli is feeding the little Eli Jr.