A few days passed away.
Eero had spent the days observing the others, practicing Kido theory with Hachigen, and constantly monitoring the strange, dual-colored Reiatsu that now flowed through his soul. He now knew the exact limits of his power.
"Here, keep this identity card with you, and this is the temporary body with your appearance; you can equip it when going outside; it will suppress your reitsu and keep you hidden from their eyes." Shinji appeared beside Eero, a plain white card and a tightly compressed Gigai in his hand.
Eero glanced at it and then nodded, then raised his hand and patted the body. Instantly his Shinigami soul body merged with it.
Eero then checked the function of the body; it felt a little rigid, heavy, and strangely muted, like wearing a perfectly tailored suit of spiritual stone.
'It's definitely manufactured by that Kisuke. The man is a genius of spiritual engineering. Crude but effective, and it's suppressing my reitsu too much. It needs to be perfect for my power to evolve further.' Eero thought to himself. He turned and glanced at the Shinji and said, "Now the concealing is done. It feels... functional. I will stroll outside for a while to adjust."
Shinji raised his hand and shrugged his shoulder. "You are free to go anywhere you want; concealing was necessary for you and us to avoid any trouble."
Eero nodded and then walked toward the outside direction of the warehouse, his attention drawn to the dual, faint spiritual marks that rested on his backhands: the right one a full gray mark, and the left one a golden mark with a purple layer.
'My both Zanpakutos are sealed inside this artificial body, their spiritual forms locked into these marks. That's why my reitsu is contained. This suppression technology is intriguing, but I cannot be contained by it.' Eero thought to himself. He raised his right hand, a straight, long silver sword protruding out from his palm. It was his Zanpakuto, Eien no Michi, in a new manifestation: the hilt featured four glowing clover marks on its handle, each representing a single, reality-bending wish.
Infinity Sword! Wish Form!
"I wish to make this artificial Gigai real and perfectly suitable for my soul, with a mix of human and Quincy bloodlines naturally running through its veins." Eero stated the wish with cold, clear intent, looking at the four clover marks.
Instantly one of the clover marks dissolved into sparkling, purple reishi, vanishing as the energy was consumed to fuel his will.
Eero felt a warm, golden current spreading through his entire physique. A light smoke, shimmering with silver and purple particles, rose from his whole body. The smoke and warm current covered his muscles and bones, fine-tuning and adjusting his height perfectly, then covered bone marrow and internal organs, releasing fresh new blood cells with purple particles mixed in them. Then his heart and other internal organs started working perfectly, and along with heartbeats, blood spread through each artifact and vein, reaching every corner. A perfect, life-sustaining circulation of all four species' powers had begun.
Eero raised his brow. The sword retracted back into his palm, and a gray mark with a golden sheen replacing it on his right backhand.
"Well now I have human, Quincy, Hollow, and Shinigami, all kinds of power mixed in my reitsu, a true Quad-Hybrid. My reitsu also increased by four times more than before, settling at a new baseline." Eero muttered thoughtfully, looking at the marks on both his backhands, then put his now fully organic hand in his pocket and walked forward comfortably toward the town market. He didn't feel any rigidity in his actions as before after transformation.
'Next I have to explore my Fullbring ability and Quincy Schrift text. They must manifest from my new Hollow and Shinigami/Quincy Zanpakuto, respectively.' Eero thought to himself, looking at the golden veins spreading faintly on his right hand, a color different from the pure blue veins of the Yhwach bloodline.
He glanced in the direction of a restaurant in the market, a strange, biological pang of hunger hitting him after the body's complete transformation.
'I don't have money, but I have a wishing machine,' Eero thought to himself, and then the straight silver sword with three clover marks appeared once more.
Infinity sword! Wish form!
"I wish to have infinite and untraceable money in the local currency." Eero muttered thoughtfully, and a wallet appeared in his hand. Another clover on the sword handle disappeared, leaving two behind, and then the sword retracted inside his arm.
Eero raised his brow and opened the wallet, looking at ten yen bills inside. Each bill is arranged from large to small. He grabbed out one bill instantly, and another replaced it inside out of nowhere.
'A continuous wish effect, perfectly executed within the boundaries of a simple concept.' Eero thought to himself and then walked inside the bustling restaurant and sat down at the table in the corner, then ordered some food.
Meanwhile, on a building roof nearby, Kisuke Urahara glanced in the direction of the restaurant with Eero sitting inside it. He adjusted the brim of his hat, his usual smile faltering slightly.
"It's interesting; I have to meet him personally." The figure adjusted his hat and then, with a flicker of Shunpo, disappeared.
On the other hand,
"Guest, what do you want?" A waiter appeared beside Eero and asked for the order.
Eero glanced at menu and ordered some dishes. After noting the waiter walked away, Eero turned and glanced at the direction of the park bench outside, a subtle amusement in his eyes.
"Sir, your order," The waiter appeared beside him and put the dishes on the table one by one. The food smelled wonderfully of spices and savory meat.
Eero nodded with a light smile and then started eating after some table manners; then he left the restaurant after finishing the meal, leaving a generous amount of untraceable yen on the table.
...