Initially just hang out, albeit with some nudity! Getting to know Akemi as well!

"So... You got any books around?" Akemi asked as they walked into Denki's apartment.

"Not that many, but we do have a few... You like reading?" Denki asked her.

"Yes, and swimming too!" Akemi nodded. "I also do some jogging and nature walks, occasionally Candy Crush on my phone!" she summed up her hobbies for him.

He nodded and said, "Well, we got a bookshelf in the living room, take your pick."

She nodded, beginning to discard her clothes again as she walked over. He blinked, but decided against stopping her. If she was comfortable with casual nudity around him, who was he to stop her?

Momo also started stripping, and said, "I think I'll join her."

Denki stared at her. "In nudity, or on reading?" he asked, despite knowing the answer.

"Yes," she winked at him, working off her bikini just as Akemi finished stripping as well.

"That's more or less what I figured," he remarked, getting his phone and headphones out to listen to some music while gazing at them, and sat next to them on the couch. Momo grinned and proceeded to sit on his lap, and snuggle against him after picking out a book, Akemi nuzzling into his side. He didn't stop either of them, simply grinned and relaxed, enjoying the simple companionship of the moment.