I'm not Rumiko Takahashi so I don't own Urusei Yatsura.

Senior year for Ataru Moroboshi and Lum Invader was starting, and the two cautiously walked and flew into Tomobiki High. Both were nervous about what to expect from their classmates. Ataru would get grilled and maybe attacked by the men, and there was a good chance that the girls would ask Lum what happened when they left the party. They agreed not to tell anyone, since it was none of their business, but it was going to be really irritating until they got the message. And that wasn't something the "Class of Failure" did easily.

They went into Room 3-4, their new homeroom and saw Onsen-Mark seated at his desk. It seemed that he was the only teacher that was even partly willing to deal with the students there. So now he handled Class 3-4 while the teacher that originally would have was reassigned to the new Class 2-4. Onsen-Mark didn't look too happy, but he was given a pay raise dubbed 'hazard pay' and at least knew what to expect of everyone there.

Ataru and Lum took there seats and ignored everyone there as best they could. But apparently Megane didn't want to be ignored. "Ataru. Just what the hell were you thinking?" He shouted as he pounded the desk Ataru was using.

Ataru gave the bespectacled boy a barely tolerant look. "You're going to have to be more specific than that Megane."

"You know damn well what I mean." Megane glared.

Onsen-Mark sighed and wanted a drink. "Great. What a way to start the year."

"If you mean at Mendo's party, I don't know what to tell you. I can't remember that night at all." Ataru replied.

Megane didn't buy it. "Yeah right. Like I'm going to believe you."

"It's true Megane." Lum calmly butted in. "Me and Darling really can't remember that night."

This calmed Megane's anger a little. "Seriously?"

Lum nodded. "Seriously. So we would appreciate it if you would tell us just what upset you instead of assuming we know."

Megane sighed. "Ataru here was rather... uncouth with you at the party."

Lum arched an eyebrow. "You mean him saying what I've always wanted to hear?"

"I thought you couldn't remember." Megane curiously countered.

"We don't." Ataru replied. "But we stopped by Mendo's the next day and he said I... got 'romantic' with Lum, so to speak."

Megane frowned. "Romantic? You kissed her like a starved maniac and groped her inappropriately."

"And did I mind?" Lum asked, as if the answer was obviously 'no.'

By now some of the other students were listening in, including Shinobu and Ryunosuke. Ataru got a little embarrassed. "Enough. Whatever happened was between Lum-chan and me and there was nothing wrong between us. And there still is nothing wrong between us. What we did was none of your business so please drop the subject."

Everyone was stunned silent and thought the same thing: 'Lum-chan? Since when does he call her that?'

Onsen-Mark ordered everyone to be seated once the last of the students showed up, and class started.

What's Lum's real last name? I've heard both Invader and Redet, but never told which one's real. But since Invader has been used in the anime, I'm going with that one here.