Cut to the evening!

"So, you called about bringing Petra into the harem?" Dorothea asked as she and Manuela stepped in. "That sounds like it might be fun!"

"Already moving on to the next addition, eh?" Manuela chuckled. "You really are more of a player than I initially took you for... Honestly, most men who look for harems are total perverts, but you're actually alright."

Byleth replied in a total deadpan, "I have a Sex Genie literally living rent free in my head, with some of her horniness bleeding into me."

"A very small portion!" Sothis chimed in "helpfully." "Less than one percentage, for context!"

Byleth blinked, wondering how the actual hell Sothis had ANY self control at all if that was accurate. "...point being, I'd like to see you both try to keep your lusts completely in check with that sort of thing going on."

"Might be fun to try out later, actually," Manuela mused, before there was a knock on the door.

"Come in!" Byleth called.

Petra stepped in, and blinked. "I wasn't being aware of Professor Manuela and Dorothea being involved in my lessons, Professor..."

"Oh, there will be "lessons" alright," Sothis giggled, rubbing her hands together gleefully. Byleth ignored her. Something he was getting WAY too used to doing.

"They'll be here to assist," Byleth told her as Petra took a seat.

She shrugged, before speaking up, "Something was occuring to me, Professor... You still never told me what "fell for it" meant."

"Ah. Well, it is an expression that means that whoever "fell for it" was fooled by a lie or a trick. Possibly even a joke," Byleth explained, and Petra nodded.