The world is submerged by the sea, and Luo Zhen is the last human. This is the base, this is the system. Explore the truth of the apocalypse, summon girls to develop and grow stronger, and when resources run out, travel to other worlds. Enterprise: The Commander doesn't let you get under the covers, are you going to or not? You're going to get under the covers even if you die. Frederick the Great: I just came to check if the Commander is properly covered up. Prinz Eugen: Commander, when you see me at night, just say goodnight, not... Luo Zhen: What are you doing here? How did you get in? A group of ship girls couldn't contain themselves and burst through the door, a great battle was inevitable. Luo Zhen: Ship girls are strong, but building a base requires various talents, are there any other roles? System: Yes, bro, yes. Bulma, Android 18, Tsunade... you name it!

I've traveled through time, but not just one world. When awake, I'm in the world of Souman, and when I'm asleep, I'm in the world of Harry Potter. But that's not the most outrageous thing. What's outrageous is the restraining power of the Souman world: Gaia, who enjoys picking up random things in the World Sea. To prevent the daily Souman world from being destroyed, Hanyu Genichi reluctantly picks up his wand and cleans up Gaia's mess. From the T-virus to Kabane, to ghouls, gastrula, and later, giants, they don't care about the lives of humans at all, do they? Gaia, you really only think about yourself.

Transmigrating to a high-martial arts world where mythology has descended, the legacy of a cultivation academy has become a super-dimensional academy. Uchiha Madara, Iron Man, Wei Zhuang, and even more big shots have become my students? Feng Mo: "There's no other way, I'll just have to teach them a lesson!" One year later… Shameimaru Aya: "Breaking news! Breaking news! The Ninjutsu Club, Light Music Club, and Service Club are now recruiting for the new semester!" Platelet: "Excuse me, please make way, I need to listen to μ's sing." Otsutsuki Kaguya: "What's so great about singing? Come join our Conquest Club!" Rem: "Conquest Club? Conquest what? Games?" Kurumi: "Of course… it's the Principal!"

In the worlds of Naruto, One Piece, Bleach, Demon Slayer, and One-Punch Man, what kind of effects would Link have if he combined chakra with breathing techniques, Haki with limiters, and spiritual pressure with genjutsu?

Brief introduction - just take a look

Qiubai has traveled to a world where inner and outer worlds merge. Growing up, he's surrounded by characters he's "familiar" with. There's Akizuki Airi, Akizuki Marina, Shiina Chizuru, Mashiro Chisato, Hoshizuki Kaede, Hoshizuki Suzu, Nanao Akane... and his two younger sisters, Mikan Yuuki and Kasugano Sora, who live with him. Mikan is young, but capable, mature, and energetic, taking care of the housework daily, making her a worry-free existence. Sora is slightly older, but aloof and tsundere, with a slightly frail constitution. She stays at home every day, a worrying prospect. When Qiubai turns 18, the system officially activates! Kuze Akibai: What? Just coming of age, I have to become a male succubus in the inner and outer worlds? And I even have the ability to stop time!

Good news, he's transmigrated to the world of anime! Bad news, no cheat codes! Su Mu transmigrates to a crossover anime world filled with slice-of-life stories, but all he gets is a broken Sword Saint System. The system can provide him with sword techniques from various worlds, but it can't teach him them immediately; he has to learn them through his own efforts. Su Mu practices diligently and eventually becomes a sword master, but the comfortable life of modern society troubles him. No one can challenge him, and he finds amusement in beating up thugs at Soubu High School. Until one day, he obtains an Infinite Flow System, allowing him to transmigrate to different worlds and challenge powerful figures from those worlds. Su Mu has completely opened the door to a new world! *The Failed Knight*, *Black Bullet*, *The Burial of Freeland*, *Ascendance of the Fearless*, *High School DxD*, *DanMachi*, *Type-Moon*, *Honkai Impact 3rd*... From then on, Su Mu's fame spreads throughout various worlds. (Main world mixed with Aoyama Gyoukai, randomly transmigrating to Infinite Flow worlds)

[Anime Crossover + Invincible + Reincarnation Game + Multiple Heroines]

In his previous life, he was assassinated by a hater and died unexpectedly. When he woke up from a dream, he found himself in a crossover anime world and became the adopted son-in-law of the Shinomiya family.

Akihiro Shinomiya, who should have been striving to take over the Shinomiya Group and reach the pinnacle of his life, suddenly heard a cold, mechanical voice in his ear one day:

Welcome to the Game of Reincarnation...

What?! After living here for so many years, I'm suddenly being told this isn't a slice-of-life anime crossover?! What about all the hardships I've endured?!

[Plug-in loading]

Please select your initial template.

【Tsugukuni Yoriichi】

[Muzan]

...I'm sorry, my voice was a bit loud.

Since that's the case, I'll just have to choose not to eat beef from now on.

So said Shinomiya Akihiro.

(Main world: Crossover anime worlds - Kaguya-sama: Love Is War, Oregairu, Spy House, Lycoris, Lonely Rock, Dress-Up Doll, etc.)

(Game worlds: Tokyo Ghoul, Jujutsu Kaisen, Food Wars!, One Piece...)

(Starting with Food Wars!, collect female characters from the reincarnation game; the first two worlds are mainly for fun battles.)

(Recommended characters: Kaguya Shinomiya, Chika Fujiwara, Ai Hayasaka, Haruno Yukinoshita, Erina Nakiri, Hisako Shirato, Megumi Tadokoro, Momoko from Dragon Ball...)