In a crossover anime, the only way to become stronger is by marrying a wife.

Fujiwara Chika nestled in Tsukikawa Hiiragi's arms, her white nightgown pulled down to her waist, her clothes disheveled, her hair messy, but her expression was one of contentment.

Goto Ichiri got out of bed, supporting her lower back, and took off her revealing maid outfit, blushing as she changed into her school uniform.

Yui Yuigahama blushed as well. Chika Fujiwara picked out a particularly embarrassing bright red lingerie for her to wear, saying that she was usually very innocent, but now that she was dressed in a sexy outfit, the contrast was even more endearing.

"Where's this 'gap moe'? She was just blushing the whole time! She didn't even seem to feel anything..." Yui Yuigahama thought to herself.

Finally, after Goto Ichiri and Yuigahama Yui finished dressing, Fujiwara Chika reluctantly put on her skirt as well.

Tsukikawa Shuu opened the door and saw the three people out.

"I'll have someone come and collect the cabinet later, and we can use it again next time." Fujiwara Chika smiled at Tsukikawa Shuu, and at the same time said it to Goto Ichiri and Yuigahama Yui.

"Eh..." Yui Yuigahama involuntarily shrank her neck.

“You’ll be more relaxed next time. I was quite nervous the first time I wore it too,” Fujiwara Chika said with a smile.

"Let's talk about it next time..." Goto Ichiri seemed to have lost half his soul, as his steps were unsteady due to the strenuous exercise.

"Then we're off." Yui Yuigahama turned around, brushed her still slightly messy hair aside, and smiled at Tsukikawa Shuu.

"Yes, come again next time," Tsukikawa Shuuya said with a smile.

The three girls each left on their own.

After watching the group leave, Tsukikawa Shuu returned to the house.

As usual, after preparing the meal, I sealed one portion of it in a food container.

I went outside again and arrived at my neighbor's door, where I knocked.

"coming."

However, this time, the response wasn't from Mahiro Oyama's lively footsteps, but from a slightly mature-looking woman.

The door opened, revealing a graceful young woman with purple pigtails, wearing a white lab coat, seemingly having just returned from the laboratory.

"Oh, it's Tsukikawa-kun." She smiled when she saw Tsukikawa Shu. "Thanks for taking care of Mahiro these past few days."

"It's nothing, just a small favor. I'm happy she likes my cooking." Tsukikawa Shu smiled as well.

The girl in front of me is Minori Oyama, who was originally Mahiro Oyama's younger sister.

The reason it is called "original" is because the current Mahiro Oyama has taken medicine and turned into a little girl. Her age and body have become younger. In fact, the two people's status has been reversed. The current Mahiro Oyama is more like the younger sister, while Minori Oyama is the older sister.

Unlike Mahiro Oyama, Minami Oyama is a genius girl who combines talent and hard work. Although she is already a university student and has started to do research, she actually skipped many grades when she was in school, and her current age is similar to that of Hiiragi Tsukikawa.

Previously, Minori Oyama had been taking care of Mahiro Oyama, who was considered a human waste. However, Minori's research recently encountered some problems, and she had to return to school. Mahiro's situation was then handed over to Shu Tsukikawa. Today is Minori's first day back.

"Just got back from exercising?"

Minori Oyama glanced at Shuu Tsukikawa's hair, which was still damp with sweat, and smiled.

“Yes.” Tsukikawa Shu smiled.

"It looks like you were really into it; you're sweating quite a bit," Minori Oyama said with a smile.

"Yeah... indeed."

Tsukikawa Shuu thought back to the scene when the four of them were on the bed together.

It's quite an achievement for one person to withstand the attack of three.

"Then could you please bring Mahiro along next time? This child just doesn't like sports," Minori Oyama said with a smile.

"This... I'm afraid that won't work." Tsukikawa Shu forced an apologetic smile.

The kind of exercise I did is not suitable for children.

"Come in and sit down. I really need to thank you properly for all this time." Minori Oyama didn't mind and made way for her.

"Then I'll have to bother you," Tsukikawa Shuuya said with a smile.

“Tsukikawa-kun is here~” Minami Oyama called out into the room.

It was as if some kind of mechanism had been triggered. Upon hearing Tsukikawa Shu's name, hurried and excited footsteps immediately came from the upper floor.

After taking off her shoes in the entryway, Tsukikawa Shu smiled and went inside.

"Dinner! Dinner!" Mahiro Oyama was still wearing that oversized T-shirt as he took the lunchbox from Hiiragi Tsukikawa.

“That child,” Minori Oyama said, “I was just about to cook today when she refused, saying she wanted to wait for you to bring it over.”

"I'm really sorry to have troubled you." She bowed slightly to Tsukikawa Shu.

"Little sister... Ah. My older sister's cooking is never as good as Tsukikawa-kun's." Mahiro Oyama muttered as he rummaged through the rice in his lunchbox.

“Yes, yes, yes.” Minori Oyama smiled, then looked at Shu Tsukikawa, “Since you’re all here, why don’t you come and have dinner together? That way there will be plenty of food.”

“Okay,” Tsukikawa Shuu said.

She went back and packed the food she had prepared into a lunchbox, then brought it to Masato Oyama's place.

Minori Oyama's cooking skills were also good, but compared to Tsukikawa Shu, Mahiro Oyama still preferred Tsukikawa Shu's cooking, and when he sat at the table, he only ate the rice that Tsukikawa Shu brought.

“Makoto is very shy. Has she caused you any trouble or given you anything strange during this time?” Minori Oyama asked.

"No, she's always been quite well-behaved," Tsukikawa Shuu said with a smile.

"I won't give strange things to other people!"

Masahiro Oyama, barefoot, wiggled his little feet in protest.

"It's clear that she has really let go a lot. I was quite surprised when I came back."

Minami Oyama said, "Before, she wouldn't contact or talk to anyone other than me."

"This also shows that Tsukikawa-kun is a very charming person."

Chapter 149 Do you like Tsukikawa-kun?!

Mahiro Oyama and Minori Oyama had dinner together, and the three of them chatted and laughed.

Minami Oyama was also a good cook; she prepared several dishes, which she and Hiiragi Tsukikawa shared.

"Thank you for the meal," Tsukikawa Shu said with a smile after finishing her meal.

"Thank you for the food too," Minori Oyama said with a smile.

Tsukikawa Shu walked to the entrance and put on her shoes.

"Bye-bye." Mahiro Oyama waved to Hiiragi Tsukikawa from behind.

"Bye-bye," Tsukikawa Shuuya said with a smile.

Minori Oyama, wearing slippers, escorted Shu Tsukikawa to the door.

“By the way, I’ve been thinking of getting Mahiro to exercise more lately. I’d like to hear what kind of exercise you did today, and if you could take her along.” Minori Oyama smiled. “I’m usually quite busy, so I can’t exercise with her every day.”

“This…” Tsukikawa Shu scratched his face sheepishly.

How can I even talk about this kind of sport!

“I usually do high-intensity exercise, but considering that Mahiro rarely exercises, we should start with some gentler exercises,” Tsukikawa Shuu said, “like running.”

“I see, then that’s fine,” Minori Oyama said with a smile.

Watching Tsukikawa Shuu go back, Oyama Minori also returned to the house and closed the door.

Mahiro Oyama was happily playing a game in his room.

"How have things been going with you lately, Tsukikawa-kun?" Minori Oyama sat down next to her.

“Yes! Very good!” said Mahiro Oyama.

"You've been cooking all this time, haven't you, Tsukikawa-kun?" Minori Oyama asked.

“Yes,” Mahiro Oyama said with a smile, “Tsukikawa-kun’s cooking is excellent.”

“Then I’m relieved,” said Minori Oyama. “I’ll have to thank them properly tomorrow.”

“That’s true…” Mahiro Oyama stopped playing the game, placing the console on his flat chest, but he seemed a little conflicted. “But how should I thank him?”

"Let's bake a cake together tomorrow," Minori Oyama said with a smile.

However, Mahiro Oyama shook his head.

“No, Tsukikawa-kun has always taken good care of me,” Mahiro Oyama said. “Besides cooking, we also play games together. Also, I often go to his house for tutoring. And, with Tsukikawa-kun’s help, I found friends with similar personalities to me.”

"Huh? You two have become that close?" Minori Oyama was shocked.

Mahiro Oyama has changed a lot, which shocked Miho Oyama.

In the past, Masahiro Oyama was a complete social outcast, never leaving his home, with no friends, no income, and no love.

Her only companions were sugary drinks and games. She didn't know how to talk to people and was extremely socially anxious.

But Mahiro Oyama is much more lively now. Not only can she have normal conversations with people, but she has also made friends. Her social anxiety has been greatly reduced.

However, Minori Oyama put both hands on Mahiro Oyama's shoulders, her expression becoming very serious.

The above behaviors would be perfectly normal to any socially savvy person, but the problem is that the person in question is Mahiro Oyama. Mahiro Oyama would never act so intimately with anyone other than his family.

"What else have you and Tsukikawa-kun done?" Minori Oyama asked earnestly.

"Huh?" Mahiro Oyama blinked, and the pink ahoge (antenna-shaped hair sticking up) on his head swayed.