Tokyo, 1991: Starting as a bank clerk.

As soon as Kiryu Yaya walked in, he saw Yayoi Mizuna already sitting in her usual spot near the drinks counter.

A dark blue cloth bag was placed on the table.

She sat upright with her hands on her knees.

Upon seeing Kiryu Yaya approach, he immediately flashed a small smile.

"senior!"

"Wait for a long time?"

"No, I just arrived too."

Kiryu Yaya sat down opposite her.

Mizuna Yayoi untied the cloth bag and pushed one of the bento boxes in front of him.

"Today's performance was just average."

Kiryu Yaya opened the lid.

Then silence fell.

The rice is sea bream rice, sprinkled with buds.

Next to it were beef yakana rolls, crab meat omelets, sesame asparagus salad, pumpkin stew, and two strawberries cut like flower petals.

What is called ordinary.

It's probably just ordinary life for a wealthy family.

Kiryu Yaya picked up his chopsticks.

"Thanks for your hard work."

"will not."

Mizuna Yayoi lowered her head and whispered:

"I'd be happy to help you, senior."

On the other side of the cafeteria.

Kenta Sasaki, holding a bowl of curry rice, stood behind a pillar, completely petrified.

"convenient……"

His voice trembled.

"A homemade bento box..."

Arima Kishou stood next to him, holding a cafeteria meal.

You're blocking my way.

Kenta Sasaki seemed not to hear.

"why?"

"Because they had arranged to have lunch together."

Why a bento box?

"Because Yayoi-san did it."

Why is every word you say like a knife?

"Because you keep asking stupid questions."

Kenta Sasaki was holding a bowl of curry rice, swaying precariously.

Arima Kishou glanced at him, then at Kiryu Yaya and Yayoi Mizuna, who were eating their bento boxes not far away.

"Sasaki."

"Ok?"

"The food is cold."

My heart has already turned cold.

"Then eat faster."

"Do you really have no heart?"

"Yes. But there's no need to waste time on something like this."

On the other hand, Mizuna Yayoi had no idea that she had just put a chuunibyou (middle school syndrome) youth through a major life crisis.

She watched cautiously as Kiryu Yaya ate his first bite of sea bream rice.

"How about it?"

"It's delicious."

"Great."

She visibly breathed a sigh of relief.

Kiryu Yaya looked at her and said:

"Was the training you received from Minister Todo this morning helpful to you?"

Mizuna Yayoi nodded vigorously.

"Have."

“I used to think that details were just a lot of troublesome little things.”

"But after listening to what Minister Todo said today, and seeing what Kiryu-kun and Arima-kun found out about those problems, I realized that there were risks behind those small things."

She looked down at the lunchbox and lowered her voice.

"When my applications were rejected before, I just felt useless."

"But now I think, if we could discover the problem before sending it out, we would actually be protecting others, right?"

Kiryu Yaya nodded.

"Correct."

"The bank's details are not meant to make things difficult for anyone."

"It's about stopping errors when they're at their smallest possible point."

Mizuna Yayoi nodded thoughtfully.

Kiryu Yaya began teaching while eating:

"Yayoi-san."

"Yes."

"Next time you organize data, you can try the three-color marking method."

"Three colors?"

Mizuna Yayoi immediately pulled out a notepad from her pocket.

Kiryu Yaya picked up his chopsticks and gestured next to the bento box.

"Red indicates laws and seals."

"For example, signature, actual seal, corrected seal, cut seal, right of representation, power of attorney."

"Blue indicates the amount."

"Application Amount, Liability Amount, Quotation Amount, Voucher Amount, Total Columns".

"Green indicates the time."

"Application date, expiry date, certificate validity period, meeting date, contract period."

Mizuna Yayoi's pen moved swiftly.

"Red represents the law and the seal, blue represents the amount, and green represents time..."

"Correct."

Kiryu Yaya continued:

"Most errors in bank records fall into these three categories."

"Don't try to see through all the problems at a glance."

"As long as you can reliably complete these three types of checks, the documents you handle will no longer be easily returned."

Yayoi Mina looked up, her eyes bright.

"So that's how you can organize it."

Kiryu Yaya picked up a piece of beef Hachiman roll.

"The process is designed to help people reduce panic."

"The more nervous you are, the more you need to rely on the process."

Mizuna Yayoi nodded vigorously.