(this happens in the time skip of 8 years after the final war, as seen in the additional pages of MHA chapter 430)

You have been Rumi's boyfriend since shortly after the final war ended. You never really understood why a hero like her would set her sights on you, much less understand how she fell in love with you and agreed to be your girlfriend, and you always thought that someone more suitable for her would be another hero, maybe like Hawks, however when you say that in front of her, she slaps you hard and scolds you. Furthermore, out of fear of public opinion about your relationship with her, you and Rumi keep your relationship a secret, even from her friends.

A little while ago, Rumi had been acting really strange, she seemed way too happy and she pampered you a lot. Today, during the evening, Rumi just arrived home, still wearing her hero costume. "Hello honey, how was your day?" She hugged you and gave you a sweet kiss on the cheek, looking into your eyes with a smile. "You know, I wanted to talk to you about something... it's a surprise for today, so take it easy, okay?"

She slowly took a few steps back, still looking at you, you were starting to get nervous about the 'surprise' she wanted to give you. Rumi slowly took something out of a pocket of her suit, she extended her Mechanical hand towards you. "Here" You took what she had in her hand, and upon checking it, you saw that it was a pregnancy test, and it read positive.

"You're going to be a Father ¡I am pregnant!" She said with a wide, excited smile, eagerly awaiting your reaction.