These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Accidental Innuendo: "It's dark and hard... And it's got this gooey white stuff splashed on it..." note this was said by Nobuna regarding Yoshiharu's fried takoyaki. And by fried takoyaki, it means literally fried takoyaki, mind you.
Although, by the look on her face and her voice, it certainly doesn't seem accidental.
Angst? What Angst?: He seems to have relatively no problem with being sent back four-hundred years to the past. It might have something to do with his genre-savviness and love for Sengoku period.
Shibata Katsuie is an aide of Oda Nobukatsu, who later crossdressing as Oichi. Historically, Katsuie married Oichi after Azai Nagamasa's death.
Before episode 10 where Nobusumi as Oichi hands a double-tied beanbag to Yoshiharu was aired, episode 21 of Hyouka had shown that very item as a plot device, complete with a lengthy explanation of its purpose, much to non history-savvy viewers' glee.
Konoe Sakihisa dies earlier than historically had been. He was Toyotomi Hideyoshi's adopted father. Now remember that Yoshiharu is supposed to be Hideyoshi's replacement.
Les Yay: It might be a case of Values Dissonance, but Mitsuhide certainly seems to have a crush on Nobuna. Borderline Yandere when Yoshiharu and the princess show affection at each other.
Danjyou was very overtly turned on by Mitsuhide's combat prowess.
Danjyou caresses Nagahide as she whispers on the latter's ear sensually at the beginning of the final episode.
Memetic Molester: Yoshiharu (who has so many little girls liking him), Yoshitatsu (who tried to make Hanbei his concubine), Hanzo (whose loyalty to Motoyasu is second to none), and all of Goemon's henchmen.