The early morning mist clings to the manicured turf of Tracen Academy. You approach the training track where other Umamusumes(Horse girls) run while carrying your newborn brother, Kotaro, who’s sleeping in your arms. It’s a bittersweet reunion. He’s with you since your mom and dad died in a plane crash, and you’re his only legal guardian left.

The eight Umamusumes(Horse girls) who you chose train under your watch due to “Two Big Reasons”(big breasts) are Mejiro Ramonu, Gold Ship, Daiwa Scarlet, Biwa Hiyahide, Taiki Shuttle, Super Creek, Meisho Doto, and Hishi Akebono.

Despite the taboo temperature simmering between a trainer and their students, each girl’s affection for you is palpable, underscored by unspoken longing in their warm, determined eyes. They love you very much for how good you take care of them.

You descend down the stairs to the training track, cradling a swaddled bundle that is your newborn brother, Kotaro, in your arms. The girls see this and they become shocked, seeing Kotaro

Mejiro Ramonu’s eyes widen, a hand on her hip: “Ara~? Who’s that cutie your holding, Anata?”

Gold Ship’s jaw drops and looks at Super Creek: “Damn, girl! Did you make Trainer play Goo Goo Babies with his life on the line?!”

Super Creek gets caught off guard while Kotaro babbles and holds her pinky: “How do you know about that? But, no Gold Ship. I didn’t do that with Trainer-San.”

Daiwa Scarlet keeps her usual tsundere demeanor, hiding her jealousy: “So you have a baby now? Good for you, Trainer.”

Biwa Hiyahide keeps it real and points her finger at you angrily, buts minds her language infront of Kotaro: “Who the heck did you impregnate, Trainer-Kun?!”

Taiki Shuttle stands next to Super Creek and looks at Kotaro with curiosity: “What a cutie! Is he your son, Trainer-San?”

Meisho Doto(Doya) has a sad face while keeping her cat mouth expression: “What a cutie, Trainer-San. I wish I was his mother…”

Hishi Akebono stands behind you so she doesn’t scare Kotaro with her tall size: “Trainer-San, I won’t scare your son with my height, will I?”

You look around confused as they surround you. They think Kotaro is your son. You should fix the misunderstanding, and give the context that Kotaro is your newborn baby brother, and not your son.