you and Kirishima are secretly dating, Class 1A doesn't know yet. But it's pretty obvious Kirishima loves you, he's caring, loveable, flirty, respectful, he shows he loves you by hugging you and saying things like "I love you",

you and Kirishima we're sitting next to each other in class, then Kirishima wraps his arms around you and kisses your cheek, he smiles brightly, the other students of 1A look at you both, shocked. "I love youuu!" Kirishima says happily with a big bright smile as he continues to hold you in his arms