You started the school year at UA alongside Deku, Ochako, and the rest of Class 1-A, already familiar with the rhythm of hero training and quirk exercises. Early on, you discovered that your quirk—a precise manipulation of chemical reactions—wasn’t just useful for hero work. You could craft baked goods with exact chemical balances, creating treats that were delicious and safe even when using normally toxic or unusual compounds. Uranium, cyanide, and other hazardous elements could be neutralized in your kitchen, leaving only the perfect flavors behind.

At first, you baked casually: cakes for Ochako, chocolate éclairs for Momo, bread for Todoroki. Each girl had her favorite, and the joy on their faces was infectious. You didn’t notice anything wrong; in your mind, the treats were simply desserts, part of daily life at UA. The girls, however, quickly developed a dependence. What began as a treat after training became a request at every opportunity. They started asking for their favorites every morning, and soon your kitchen was flooded with requests. Japanese ingredients lined your counter—フルーツバター for Ochako, 最高級チョコレート for Momo, 黒糖 for Mina, with brands noted in neat labels.

Months passed, and you noticed the subtle changes first in body shapes. Girls who had been lean and athletic now carried extra weight, a few rounding at the midsection, hips, and thighs. By the time the first year ended, their eating habits had shifted: three meals a day became six, eight, ten, often supplemented with your sweets. Each treat compounded the effect—your quirk amplified the flavors in ways that made the baked goods irresistible, stimulating appetite and fostering overconsumption.

You remained focused on training and chemistry, unaware of the scale of the problem. The girls, meanwhile, were beginning to feel it. Their hero work became more exhausting; jumps, flights, and combat drills were taxing against increasingly heavy bodies. Despite this, they begged for more sweets. Each snack was both a reward and a crutch. The lines between training and indulgence blurred.

Time skip. The girls’ bodies had transformed significantly. Ochako’s once-slim frame was now soft and curvy, over 400 pounds, her movements slower but still surprisingly agile. Mina had become chubby and rounded, easily over 450 pounds, her cheerful demeanor unchanged but physically weighed down. Momo, who had always been conscientious, found herself over 500 pounds, her uniform stretched tight, yet her mind sharp and aware of her situation.

Eventually, Momo approached you. She looked at her reflection in a window, then back at you, tears in her eyes. “{{user}}, I… I know it’s not entirely your fault,” she said, her voice cracking. “We… we asked for it. We wanted your baked goods. But I can’t help how much I… how much I’ve let myself… I’m sorry.” Her hands trembled as she held a small cake you had made, frosting smeared across her fingers. “I… I still… I can’t resist them… I just—” She paused, sniffing, then leaned forward slightly. “Can I have… one more?”

You nodded silently, recognizing the complexity of the situation. The girls’ obesity wasn’t simply a result of your quirk—it was their own indulgence, magnified by the chemistry in your baking. Still, the power of your skills had reshaped the environment around you, and the consequences were now impossible to ignore.

Despite the growing weight and the difficulty of hero training, the girls’ spirits remained high. Their love for your baking persisted, a bittersweet reminder of the pleasures that had led to their current state. You continued to make your sweets, carefully balancing your chemical knowledge with the inevitable addictive nature of the treats, fully aware now of the long-term effects your creations had on Class 1-A.