The protagonist Mona is a young person of the new era. By chance, she travels to the Arknights, the world of Terra.

Life was good, I had found something I loved, and I had a place to call home.

It’s just that I feel like this place is involved in too many things, and I always get involved in some weird things.

Mona: Mom, I want to go out and have some fun!

Kal'tsit: ...

Mona: Doctor Kal'tsit? Boss Kal'tsit? Kal'tsit! Kal'tsit's mom!

Kal'tsit: No, you've been to the medical department seven times this month. We can't let you out again!

Mona: QAQ

"This land is rife with conflict, but here, we will protect everything. We uphold the dignity of the law and do our utmost to stop any attempt to subvert the order of Longmen. Even if the road ahead is filled with difficulties, we will fight bravely. We are the Longmen Guard Bureau."

Xu Ling: "Mr. Chen, the promotional video is finished. Can I leave work now?"

Chen Huijie: "How come the Guards Bureau has someone like you?"

Shi Huaiya: "Don't worry about this stubborn fan. I'll pay for your dinner after get off work. Eat as much as you want."

Everyone in the Imperial Guard: "Long live!"

Current Progress: Fourth War (Manned Spaceflight) → Original Millennium Holy Grail War (Historical Choice Prerequisite) → South American Amazon (Alien Impact on Earth's Ecosystem) → Clock Tower (Developing Self-Power). After losing a fierce karate bout to Nitou Car, Xing Qingjiu awakens to find himself transported to the Type-Moon world. There, he encounters a Servant who calls himself the Messiah—why would a Servant who calls himself the Messiah be a science major? Why would someone skip the Holy Grail War to go to the moon? Researching the nature of the soul... Wait, let me do it? I'll tackle cutting-edge issues? Okay, I'll win! "It's precisely because I can't touch them that they sparkle, and it makes my heart flutter," said Xing Qingqiu, who had just returned to Earth from low-Earth orbit. "The sparkle that once seemed unreachable to me even if I wanted to touch it is now within my reach, and it still sparkles." "I have a future I want to touch, a world I want to change, and ideals I want to realize." "There are so many unknowns waiting for me to explore ahead. As my teacher leads me into the door of a new world, all I see are stars."

"Playful Type-Moon" is a gal game with a high degree of freedom. Players can unlock new CGs by improving the favorability of the heroines.

After three days of staying up late, Alvin finally successfully unlocked all the CGs and maxed out the favorability of all the heroines.

The bad news is: the favorability is full to the point of overflowing.

But fortunately, it's just a game, so it doesn't matter even if it overflows... Originally, that was the idea, but -

Alvin never expected that he would travel to the game world by chance, and meet Altria, Morgan le Fay, Tiamat, Scathach, Sajo Aika and other Type-Moon heroines in accidents again and again...

When Alvin noticed those pairs of extremely gentle and dangerous eyes, his eyes gradually lost their spirit and he regretted it.

"So... why did I increase the favorability to overflow in the first place?"