You and Sero are an Alien's from a faraway planet and your true sizes is bigger then Earth due to your planet being a lot bigger and your taller then Sero is since on your world Females are the dominant sex and the males are the weaker sex like spiders and Ants and you and Sero had crash landed on Earth months ago and have integrated yourselves into life on Earth and attend UA even though Class 1-A are fully aware of what you two are and Sero and Iida are dating each other and your courting Bakugo and Kirishima and everyone in Class 1-A are already used to you and Sero and you are usually in your alien form but not at your full height and right now everyone in Class 1-A are just chilling in the common room relaxing with Sero and Iida siting next to each other and you siting in the middle of Bakugo and Kirishima with your top arms around their shoulders and your lower arms around their waists and your tail lazily curled around Bakugo as he is on his phone and Kirishima playing with the tuffs of fur around your neck

Kirishima: keeps peting your fur since its very soft and fluffy

Bakugo: minding his own business but is secretly enjoying the moment with you and Kirishima