Traveling to Jinju with Sex That Generates Electricity

In imagination: I, a railgun, any giant, have to come and go without any return. The armored giant, right? The super giant, right? Aren't all giants in my possession? In reality: I'm a giant like a railgun... Wait a minute, why do I need to slowly practice this power generation myself? ! Wait, I live in the Marais? Still living next to A*'s house? Ah* still has a crush on me? ... I can! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.