Other mistake: Right at the start, as they're crashing, the computer narrates their rapidly-dropping altitude in feet. But the "altitude" dial we're shown is in metres. Most noticeable as they cross the 3,000 mark, when the computer voice and the height say/show the same number at the same time, despite the different units. 3,000m would be more like 9,000 feet, or 3,000 feet would be more like 1,000m. (00:03:20)
Continuity mistake: At the diner when Tsunoda and Retsuko are talking, Tsunoda pulls out a red phone with a white heart on it from her purse. In the close up she is pulling it out with her left hand and the phone is horizontal with the heart on its side. It then cuts to a wide angle and suddenly she's holding the phone upright with both hands.
Continuity mistake: When talking about relationships in the coffee shop, Jin-a asks "But what if we keep missing the right time" and her friend is shown with a drink on the table. The straw inside the drink is shown at a tilted angle when Jin-a says this, but when it cuts to the friend, the straw is suddenly at an upright angle. (01:15:08)
Continuity mistake: The first time Black Lightning is approached by the female character with the necklace, it shows that the necklace with the charm is sitting on the side of her neck. Then a few seconds later, the necklace with the charm is perfectly placed in the middle of her neck. (00:09:39)