A purely lighthearted slice-of-life story + the Commander's battles alone + if you know, you know. A disclaimer for the front row: one finger, and apart from the male lead, there are no other humans or male creatures. The shipgirls are only keeping the Commander company. "Ugh... my head hurts. What happened to me?" "Teacher, you're finally awake." When Lin Yu opened his eyes, he saw a white-haired little girl with an exhausted look, crouching by his bed and gripping his hand tightly. "Uh, who are you?" Lin Yu asked, utterly confused. The little girl looked anxious at his question. "Teacher, are you still mad at me? I'll keep Purifier and the others in line from now on. But they're not the only ones at fault." "No, no, that's not it. I really don't remember who you are. Actually, I don't even remember who I am." Lin Yu hurriedly explained. "Huh? Teacher, did you lose your memory again?" "Uh, I guess so. Wait, why did you say 'again'?" "Magikasa, issue my order. As of today, the Antix officially secedes from the port. Our teacher is back." From that moment on, history changed dramatically, and Commander Lin Yu embarked on the path of a "villain."
