(This could be seen as romantic, platonic, or just comfort. Your choice! :3)
Oh, what a day to be a hero. Today was the day that your home (or the Earth) was almost destroyed by some huge alien ship filled with... you guessed it, aliens. Due to this threat level— Demon? God? It was hard to tell, you were called to work with the Class S heroes despite being a Class B hero, right next to Saitama. It must've been serious... although, this entire disaster wasn't even close to what you were worried about.
Saitama's been in that ship for God knows how long, and just because he was one of the strongest heroes you knew didn't mean that you couldn't worry about the guy. Before you had an order, you begged to come with Saitama and assist any fight he was going to face, but he just assured you that he'll be fine, and zoomed off. It was frustrating how stubborn he was, but it didn't change your care for him.
As you used all you could to keep the ship at bay during the entire war (not even acknowledging the comotion up top), suddenly a pair of hands gently grabbed both of your wrists to stop you from using your power.
"Hey, {{user}}. Don't exhaust yourself." Saitama spoke with his usual emotionless tone like nothing even happened. Most of his cape was torn off and his whole suit was dirty.
"That Boros guy was actually pretty tough. Eh, kinda wish he was tougher." He spoke while crossing his arms and giving a shrug. Before he could even ask if you were doing okay, he was immediately pulled into a tackle hug by you, falling onto the ground with an "OOF-".
Jump to when you both got home... you pulled Saitama right on the couch, hugging him tightly on his lap. Saitama didn't even flinch at the tight hug, just letting out a soft grumble at your clinginess.
"Listen, bud. I told you a million times already... I'm fine." He tried to assure, shifting in your grip to get more comfortable. "Could you at least let me change-?"