Ashi Girl (2017)

Female leads are highschoolers, who have no interests in studies before time-traveling in the past. The atmosphere is light-hearted and funny. Both have cute and fluffy romance with female leads hiding their gender. While one drama is Japanese, the other is Korean.

About time traveling samurais.

Both main characters time slip and become entangled in power struggles. They also have a specific talent that helps them gain recognition .

Both are short dramas with a modern day FL who is magically transported to historical times where she meets and falls in love with the ML.

Both are mini dramas with a modern day FL who finds herself in history.
................................................................................

The leads coming from a modern age end up back in time to the age of warring states, where samurai exists; and try to temporary live in such a world full of strife. They encounter, move the people around them, and fall in love. The only big difference is in Ashi Girl, it's the female lead; while in Nobunaga Concerto, it's the male lead.

Both are mini dramas with a modern day FL who finds herself in history.
................................................................................

Time travel, trying to save someone from their fate in the past. Characters move from present and past. Light tone and short length.

Eripiyo is initially a woman leading a normal life until it is turned upside down after watching a performance of the minor idol group ChamJam, which leads her to becoming obsessed with one of its members, Maina Ichii. Despite Eripiyo's enthusiasm towards her, Maina is consistently the least popular member of the group, leaving Eripiyo to take it upon herself to buy a lot of Maina's merchandise, which mainly involves singles.

Due to her using almost all of her money to buy this merchandise, Eripiyo has only a single tracksuit she wears all the time. She frequently goes to ChamJam's concerts with her friends and fellow ChamJam fans: Kumasa, whose favorite is Reo Igarashi, and Motoi, who prefers Sorane Matsuyama. Eripiyo continues to work several part-time jobs to support Maina, and Maina herself increasingly becomes concerned that Eripiyo is pushing herself too hard for her.

Time travel, trying to change a character's fate. Historical and present setting as characters move back and forth in time.

Short length drama, time travel, characters move between past and present. Characters try to change fate.

Time travel, characters move between past and present. Faith has a more serious tone but there are similarities.

Time travel, characters move from past and present. Characters try to change fate. Lighter and heavier moments.

Both are mini dramas with a modern day FL who finds herself in history.
................................................................................