My girlfriend is Ying Li Li

"What's wrong?"

Hashima Kiyosuke looked down.

Ebina raised her little face and summoned up the courage to say, "Tomorrow night, shall we go to the park to practice together?"

"You should ask Xiaomi about this." Hajima Kiyosuke looked at Hamster Mi and kicked the ball over, "After all, this is a competition between you and Xiaomi."

Xiao Mi hesitated for two seconds and then made a decision quickly. He raised his hand to hold the wind-blown hair beside his ears and said in a gentle voice, "Then let's go together. I also want to practice more."

There was no way, Ebina looked at him like a cat begging for dried fish, no one could refuse with such a hard heart, right?

Hashima Kiyosuke nodded slightly: "Then let's go together."

Ebina suddenly breathed a sigh of relief, "Senior, Xiaomi, see you tomorrow!"

…

The campus life on the second day was already calm and uneventful.

In a blink of an eye, it's time for school to end again.

Hajima Seisuke couldn't leave today. The teacher caught him and dragged him to help move things.

After all the trivial matters were taken care of, the sun had begun to set. Hashima Seisuke came back from washing his hands in the bathroom, picked up his schoolbag, and was about to go back to the apartment when the phone in his pocket suddenly vibrated.

Hajima Seisuke took out his mobile phone and found a message from Kato.

Chapter 899 Campus Adventure

"Hashima-kun, have you returned to the apartment?"

After receiving Kato's message, Hajima Seisuke, who had just walked to the school gate, suddenly stopped.

"No, still in school."

Hajima Seisuke sent another message: "Are you feeling unwell?"

Wait a few seconds and a new message will appear on the screen soon.

"It's not uncomfortable."

Classmate Shengren quickly said:

"Um... I have a little something to ask Hajima-kun."

"The cheerleading training has ended, and when I was changing clothes, I seemed to be ignored by everyone again."

Hajima Kiyosuke didn't react for a while: "What's wrong?"

A few seconds passed before Kato Megumi sent a message.

"The door to the locker room cannot be opened. It seems to be locked."

"..."

You can actually encounter this kind of thing, your sense of existence is really too low!

"No laughing."

Classmate Sage sent an emoji showing a bandage sealing the mouth.

"What should I do if I can't help it?"

Hajima Seisuke couldn't help but laugh. He had always been calm and calm, and he had wisdom in his hands. He didn't expect that there would be a day when he was begging for help. He couldn't help laughing at all.

"You can only laugh for a minute at most."

"Thank you, Kato-sama, for your magnanimity."

"..."

"I understand the situation." Hajima Kiyosuke took a breath, turned and walked towards the school, "Where is the locker room, I'll go there right away."

The sun sets.

The sky is filled with sunset.

The huge campus has become quiet, and most people have left. However, there are still teachers who remain in the school to patrol and inspect.

Hajima Seisuke found his teacher Suzuki Kiko, got the key from her, and quickly walked to the door of the women's locker room where Kato was.

"Bang bang."

Raising his hand and knocking on the door gently, Hajima Kiyosuke whispered: "Kato?"

"Hashima-kun, I'm here."

Kato Megumi's voice came from inside the door.

"I got the key, now open the door."

Hajima Seisuke opened the door with the key, pushed the door and walked in. The layout of the men's and women's locker rooms was almost exactly the same. For Hashima Seisuke, who had been to the women's restroom, there was no psychological pressure at all.

"reading a book?"

Hajima Kiyosuke looked surprised.

I expected to see Kato Yun calmly playing with his mobile phone when he entered the door, but he didn't expect that Kato was actually reading a book.

"It's the homework left by the teacher today." Kato held a pencil in his hand and pursed his pink lips and said, "I happen to have free time now, so I can finish it in advance so that I can watch TV with peace of mind at night."

Hajima Seisuke walked up to Kato Megumi and found that Kato was doing his math homework, and then... he saw two mistakes at a glance.

"This question is wrong."

"Well?"

"Permutation should be used here, not combination."

"I don't understand." Kato looked up with a slightly troubled expression on his face, "The teacher sounded very simple when he was teaching, and the example questions in the textbook also looked very simple. When I was doing my homework, I realized that the questions were super difficult. , I don’t even know if I understand it or not.”

It is indeed the truth of the universe and the cornerstone of all things. Before mathematics, all living beings are equal.

Even the sage classmates sitting in the frosty sky will be helpless and distressed when facing mathematics.

"The reason why permutations and combinations appear in high school mathematics compulsory courses is because it is the basis of probability. In fact, it is not difficult..."

Hajima Seisuke decided to give Kato a make-up lesson. Trigonometric functions, conic sections, and limit inequalities were not clear for a while, but the permutations and combinations were really simple - the number given in the question question was only a few dozen at most, and sometimes You can even list all the answers by exhaustive enumeration. Unlike climbing the technology tree, you need to unlock pre-knowledge points to learn. The only operations that appear are primary school multiplication.

Just like swimming and cycling, once you master it, you can basically have a smooth journey without any problems.

As for people who can't learn permutations and combinations... obviously their logical thinking is not strong enough.

Hajima Kiyosuke talked about the logical rules for a while, and suddenly heard footsteps approaching from outside the door, and subconsciously closed his mouth.

If a boy appears in the women's locker room, he will inevitably get into trouble if he is discovered.

The faint sound of conversation came from outside the door. It must be the teacher in charge of patrolling the school.

Hajima Seisuke and Kato sat together and kept quiet. After a while, the footsteps of the patrolling teacher outside the door quietly faded away.

"Hashima-kun, it's getting late, let's go back first."

Kato Megumi said softly.

Hajima Kiyosuke looked at the time on his phone. It was already half past six in the afternoon. The sky outside had darkened, and the vast twilight began to fall quietly.

"let's go."

Hashima Kiyosuke stood up and walked to the door, stretched out his hand to hold the door handle, and the expression on his face suddenly froze.

Kato Kei, who was following him, tilted her head slightly, "Hashima-kun?"

"call……"

Hajima Seisuke closed his eyes, took a breath, and turned serious: "Next time, let's study in the classroom."

"Eh?"

"The door won't open."

Kato Megumi: "..."

"It must have been the patrol teacher who passed by the door just now. He actually locked the door."

Hajima Kiyosuke was a little annoyed. He had known this would happen, so he left just now. Sure enough, it is a place of right and wrong, and you cannot stay for a long time. The ancients do not deceive me.

"I feel like I'm in a little trouble." Megumi Kato pursed her pink lips, "Even senior Shiyu and Eiri should have gone back at this point, right?"

Needless to say, seniors, members of the Home Club must have left school long ago.

Zhaili is still possible.

"excuse me, may I ask."

Hajima Seisuke took out his mobile phone and sent a message to Eiri.

"Where?"

Yinglili came back with news soon, "I just got home, why are you asking me where I am?"

Everyone had already gone home, and it would be troublesome to call Zari to come and open the door. Hajima Seisuke silently crossed out the option of 'summoning Zari'.

"Come to the park for a run in the evening?"

"Give up, it's impossible. Say goodbye."

"..."

Hajima Seisuke then sent another message to Suzuki Kiko, but unfortunately the teacher didn't know what he was busy with and never replied.

"Hashima-kun, don't be anxious."

Kato was as calm as ever, seemingly not caring about the predicament at hand.

Hajima Seisuke walked around the dressing room, walked to the window, and suddenly his eyes froze.

"Is this the second floor?"

"It's too dangerous." Megumi Kato instantly understood Hajima Seisuke's thoughts, and his eyebrows frowned slightly, "You will be hurt."

"I will definitely not jump from the third floor. If I jump from the second floor, there will be no problem."

The locker room is located on the second floor, and the windows can be pushed open directly. Hajima Seisuke thought about it silently. With his current physical fitness, there would be no problem in jumping down.

"don't want."

Kato stretched out his hand to hold the corner of Hashima Seisuke's clothes and shook his head gently, "There must be someone in the school who has not left. Maybe someone will pass by the window later."

Hajima Seisuke did not insist, "Then let's wait for a few minutes."

The two of them stood by the window and looked out silently.

The sun has set, and the clouds on the horizon are soaked in the afterglow of the setting sun, which is particularly magnificent.

"The clouds are so beautiful~" Kato raised his eyes to the sky and said softly, "It feels like I haven't looked at the sky for a long time."

Of course not for a long time, because you spend most of the day looking at your phone!

There is no doubt that Kato is a mobile phone addict. Even though he is super calm now, if his phone runs out of battery, he will definitely not be as calm as he is now.

The wind was blowing.

The autumn evening breeze is quite cool.

Kato raised his right hand and gently held the hair that was messed up by the wind. The girl with a bob hair had unknowingly grown a ponytail.

Looking at the delicate profile of the girl under the afterglow of the setting sun, Hashima Kiyosuke suddenly remembered a poem.

You stand on the bridge and look at the scenery,

The people watching the scenery are upstairs watching you.

Fortunately, I am not upstairs, but next to me.

After waiting for a while, no pedestrians passed by downstairs at all.

"It was going to be dark soon, so I jumped down."

Hashima Seisuke has made his decision.

Kato Megumi pursed her pink lips and said, "Hashima-kun, be careful."

"Do not worry."