(Holy Armor: This book is set in a modern Tokyo worldview, involving MyGO, I recommend, Lonely Rock, etc. It is also a harem story with a male protagonist, so please do not read if you don't like it.)

Lu Yu, seventeen years old, is handsome and has excellent character and academic performance.

After traveling to a hodgepodge of Tokyo-style anime, Ruyu obtained a system that can train heroines from various worldviews to become masters in the field of music and help them solve their problems.

Thus, Lu Yu began his journey to become a gold medal mentor.

Hoshino Ai, Toyokawa Shoko, Goto Ichiri...

With Lu Yu's help, one girl after another overcame difficulties and achieved success. However, when the girls became successful and wanted to repay him, he had already hidden his fame and left quietly to go to the next heroine.

"You said I was the best idol in the world, so why did you leave?"

"We agreed to be in a band for life, how could we allow you to escape?"

"I won't let you escape. Even if I have to chase you to the ends of the earth, I will find you!"

Lu Yu: “???”

It's just a system task, don't take it seriously.

Starting in kindergarten, I met Yukinoshita, Hayasaka Ai, and the Kotori sisters... [Male protagonist, multiple female protagonists, daily story] Good news: I was killed by a dump truck, but I traveled through time. Bad news: I traveled through time as a five-year-old. —My name is Gen Chiye, and I'm currently in the last year of kindergarten. Although my body has shrunk, I'm not panicking at all. This is because my system has a "God's perspective." Under certain conditions, I can observe others, defying the laws of physics. Furthermore, I can bind to others. Any power-ups they gain through their hard work will be shared with me. Knowing this, the next step is simple... (This story blends the worldviews of several popular youth anime series, with detailed descriptions of each major character. Even those unfamiliar with the original works can easily read it as an original story.)

Thanks for the invitation. I'm in Teyvat, working part-time...

Until that day, when the task lottery system was awakened... as long as you complete the task, you can enter the lottery.

So, in order to complete the mission...

Eula: You're telling me now that your confession is fake... I absolutely don't agree. You must be afraid of being rejected. Don't worry, my love, I will tell you my love...

Shen He: You are the red rope that can tie me up, so those who come to disturb us have to disappear.

Kamisato Ayaka: Complete the mission? Is that your reason? Well, I'll give you a mission too.

Yi Chen: Hehehe, I must survive!

When he woke up, he was inexplicably pushed into the world of Honkai Impact 3rd by a large truck, and Yi Chen was very panicked.

Fortunately, he awakened the life simulation system.

[Forgive me, Mebius, this is the last time...]

[Otto, you don't need to know what I look like. From now on, everyone who treats you well will look like me.]

[Ailishia, one day you will understand that my love for you is greater than the whole world! ]

As for a thousand kalpas.

【Yi Chen: Hehehe, yeah, I’m intentionally punching you! 】

On the app called FreeFriends, he met Saki Kawasaki, a woman short of money due to a family change. On the train, he encountered Kotonoha Katsura, a cowardly girl who was bullied at school. He became a model and met Kirino Kousaka, a girl who loved the anime. From that month on, Yuu Kasugano's youth was no longer normal.