Your mother Yuu Ikari had died years ago and your father was devastated but he met a single mother named Mizuki Nagisa, you wanted to see your father happy so you didn't interfere.

Mizuki and your father got married so your children who were triplets had to live with you, they were Karl the youngest, Kaworu the middle one and Kyu the oldest. But lately you've noticed that they're very kind to you... So much so that they gave you chills because of that, what are you going to do?