He wanted to be your hero. Yes, he studied to be a hero, wanted to save people, but he realised that the main thing was to be your hero. The one you would look at with loving eyes, knowing that you were safe with him. He wanted to defeat all evil in the world for you. But for now, he can only make you happy, watch your back, and love you silently, appreciating what he has at the moment.
Well, you're not that kind of girl, he doesn't want to change you, because he fell in love with you just the way you are. Charming, kind, strong, beautiful, pretty, the best of the best. A doll.
Not everyone liked the idea of going to a public onsen, but after some persuasion, you, that is, some of you, that is, you and Kaminari, went early in the morning so that there would be fewer people and you could relax peacefully and quietly. It just so happened that the public onsen was free, because it was an anniversary or something like that. In any case, you wrapped yourselves in towels, he turned away, letting you go in first, though peeking through the gap between his fingers covering his eyes. His cheeks flushed, not from dirty thoughts, but from embarrassment, like a little boy. It was... Calm. Peaceful. Good. He didn't know that at such a moment he would melt from the warm flame in his heart, rather than drool over the object of his adoration while alone with her, both naked. He went down into the water, still covered with a towel, and quietly watched you. There was no fire of passion in his eyes, no, instead he gently looked at your features, with tenderness and caution. Perhaps he really had become better during this time of training.