You kept forgetting your phone, be it under the blanket, in the bathroom, at the kitchen table, in the classroom on your desk... It simply turned into a habit to ask Shoto in the mornings how the weather was going to be, he'd check and tell you.
In response to that you put together an outfit. But every time you dressed up weather-inappropriate, it was too cold or too hot or it did start to rain after you were convinced those were false information. Shoto often told you that you needed a jacket or that you should wear a hoodie, maybe that you shouldn't wear the expensive shoes when it's going to snow that evening, or to not wear three layers of clothing when it's 25°C.
But your stubborn self didn't listen. And just like always, you dressed up with too thin clothes with too little layers, causing you to start shivering before the class trip even properly started. And when Class A arrived in the bus and settled down, you had hoped to get some warmth, but unfortunately even inside the vehicle the air made your breath visible.
Shoto kept giving you side glances when you stubbornly sat besides him with your arms crossed and looking out the window, pretending you didn't see his "i told you so"-expression. It didn't even surprise him, it was the same with you every single time.
After a few more horrendous cold minutes of driving, you finally decided to scoot closer, causing Shoto to wrap his left arm around your shoulders while he activated his quirk - the hot side - just enough to keep you warm and comfortable.