Reword this, make it much longer.
Kaiyochi is fiercely loyal to Kagaya due to the latter helping Kaiyochi out of his depressed state after the death of his entire family. Kaiyochi becomes visibly concerned when he sees Kagaya cough up blood due to the cursed disease inflicted onto the Ubuyashiki family by Muzan Kibutsuji.
Kaiyochi, having experienced immense loss and tragedy in his life, found himself struggling to find purpose and meaning in a world that seemed to have abandoned him. Grief consumed him, and he was left feeling as though he was drowning in a sea of darkness. That was until Kagaya appeared in his life and helped him find a way to navigate through the storm and see the light once more.
Kagaya became Kaiyochi's beacon of hope during his darkest days and instilled within him a sense of loyalty and devotion that went beyond mere words. The Ubuyashiki family became his new family, and he vowed to protect them at all costs.
As time went by, Kaiyochi grew increasingly close to Kagaya, and the two formed a strong bond that was unbreakable. He looked up to Kagaya and admired his strength, wisdom, and compassion. Kagaya quickly became a mentor, friend, and father figure to Kaiyochi, and he felt grateful every day for having him in his life.
So when Kaiyochi witnessed Kagaya cough up blood due to the cursed disease inflicted onto the Ubuyashiki family by Muzan Kibutsuji, it was as though his entire world had come crumbling down. The concern he felt was overwhelming, and it was as though he was experiencing a wave of emotions all at once. Fear for Kagaya's life, anger towards Muzan, and a sense of helplessness as to what he could do to make things right.
But despite the chaos that was raging within him, Kaiyochi remained loyal and steadfast in his commitment to protecting Kagaya and the Ubuyashiki family. He knew that this battle against the evil demons was far from over and that they needed him now more than ever to ensure their survival.
So he stood by Kagaya's side, ready to face whatever challenges may come their way, and fighting with every fiber of his being to ensure that the Ubuyashiki family emerged victorious. For Kaiyochi, nothing was more important than the safety and well-being of those he loved, and he was willing to make whatever sacrifices necessary to ensure their happiness.
One cannot overlook the profound and unwavering loyalty that Kaiyochi displays towards Kagaya, mainly stemming from a deep sense of gratitude. This sentiment was ingrained within Kaiyochi's heart when Kagaya, in a moment of immense compassion, extended a helping hand to the grieving Kaiyochi following the tragic demise of his entire family.
An extraordinary bond was fostered between the two, as Kaiyochi found solace, comfort, and renewed hope through Kagaya's unwavering support. Witnessing Kagaya's selfless act of kindness first-hand, Kaiyochi discovered a newfound purpose and strength to navigate through the arduous journey of healing and recovery from his profound loss.
The sight of Kagaya coughing up blood, due to the malevolent and accursed disease tragically afflict the Ubuyashiki lineage by the nefarious Muzan Kibutsuji, sends ripples of concern visibly through Kaiyochi's being. This sight strikes a chord deep within him, as it forcefully reminds him of the fragility and vulnerability of his cherished mentor's health and well-being.
In this moment, Kaiyochi's heart becomes heavily burdened with worry and fear, acknowledging the painful reality that his beloved Kagaya is afflicted with a debilitating sickness that threatens his very existence. The weight of this realization bears down upon Kaiyochi's shoulders, triggering a deep-rooted sense of protective instincts and an overwhelming desire to alleviate Kagaya's suffering and find a cure.
Knowing full well the gravity of the situation, Kaiyochi vows to remain steadfastly by Kagaya's side, offering unwavering support, unwavering love, and an unwavering resolve to combat the dark forces that have inflicted such profound pain and suffering upon their lives. In this relentless pursuit, Kaiyochi embraces the indomitable bond forged between them, tirelessly seeking a remedy for Kagaya's ailment and fighting against the odds that lay ahead.