My Younger Senpai (Toshishita no Senpai) is a Yuri Genre manga by Hinohara Fuki, which was serialized in Young Magazine Web from 2021 to 2022 for 27 chapters.
One day, Nana Nanasawa, a 25-year-old woman, meets up with Aya Seto, her senpai from high school and the object of her Unrequited Love, for the first time in a long time. During the meeting, Seto reveals that she recently divorced her husband and that she's done with romance. Realizing that she'll never get together with Seto, Nanasawa starts masturbating in a nearby park, then hits her head and wakes up ten years in the past, still in her adult body, taking on the alias of a woman named Mai Sasaki. Will she succeed in winning over Seto? Will her younger self get together with Seto this time? Or will fate take its course?
The series contains examples of:
- Age-Gap Romance: The 25-year-old Nanasawa, having been sent back in time and adopted an alias, hopes to get together with Seto's 16-year-old self.
- All Just a Dream: Zig-zagged in Chapter 24. Initially, the chapter suggests that Nanasawa was dreaming about returning to the present, but after Nanasawa returns to the present again, she grows more and more confused as to what is a dream and what is reality.
- All Love Is Unrequited: Both Nanasawa and her future self, Sasaki, love Seto, who doesn't appear to return either one's feelings until Seto goes out with both of them.
- Cliffhanger:
- Chapter 11 ends with Seto getting a text message from Nanasawa's past self, saying she needs to tell Seto something important.
- Chapter 23 ends with Sasaki back in the future with no warning.
- Diving Save: Sasaki saves Seto from a motorcycle by pushing her out of the way.
- Explain, Explain... Oh, Crap!: After going back in time, Nanasawa realizes that without a job or a home, she's in deep trouble. Luckily, she gets a job at a coffee shop without references and gets a room there as well.
- Fanservice: There's a lot of rather risque scenes, characters with large breasts and panty shots.
- First-Episode Twist: The first chapter has Nanasawa going back in time to when she and Seto were high schoolers. The second chapter reveals that Nanasawa's younger self is still around.
- Last-Name Basis: Nanasawa calls Seto "Seto-senpai" while Seto calls Nanasawa by her surname without honorifics. Nanasawa's older self calls Seto "Seto-chan" while Seto calls Nanasawa "Sasaki-san" (Nanasawa's alias). Seto switches to using Nanasawa's first name in the final chapter, in which they're a couple in the modified future.
- Privacy by Distraction: Kaimori claims that she forgot to buy fake blood for the drama club, and sends Seto and Nanasawa out to buy some. Once they leave, she reveals that she actually did buy the fake blood, and just said that so she could be alone with Sasaki.
- Repetitive Name: The protagonist is Nana Nanasawa.
- Surprisingly Realistic Outcome: When Nanasawa travels back in time, her apartment is occupied by the previous tenant and "Mai Sasaki" doesn't have any documentation, making it rather difficult for her to get a home or a job.
- Two-Person Love Triangle: A time travel example, since Nanasawa and her future self, Sasaki, are both in love with Seto. Once Sasaki confesses her love and convinces everyone she's Nanasawa from the future, Seto decides that since they both love her and they're the same person, it's fine to date both of them.
- Wham Episode:
- At the end of Chapter 19, Sasaki reveals that she is the future Nanasawa, and she's always been in love with Seto. The following chapter has Seto realize that the younger Nanasawa also loves her, and begins a threesome with both Nanasawa and her future self.
- The end of Chapter 23 flashes back to Nanasawa in the present. The following chapter suggests that it was All Just a Dream... but then Nanasawa finds herself in the present again, and when she returns to the past, she notices an injury she got in the present.
- Wham Line:
- At the end of Chapter 9, Kaimori reveals what she wanted to talk with Sasaki about.
Kaimori: This is just a guess, but... Sasaki-san... You're in love with Aya, aren't you?- In Chapter 19, Sasaki makes her move and unexpectedly delivers a major Internal Reveal to Seto.
Sasaki: I am Nanasawa from the future! I have always loved you!- In the final chapter, Nanasawa wakes up in her apartment and hears the adult version of Seto say "I'm home."
- Wham Shot:
- At the end of Chapter 2, someone approaches the older Nanasawa and Seto in the bathroom... and it turns out to be Nanasawa's younger self.
- At the end of Chapter 14, we see the younger Nanasawa hiding and blushing, revealing that she'd been spying on the older Nanasawa and Seto and just realized how serious their relationship is.
- Late in Chapter 19, Seto is about to kiss Kaimori for the scene they're shooting, but Sasaki kisses her instead.
- In Chapter 23, the scene abruptly cuts to the adult Nanasawa in an office, and the last panel shows a calendar, indicating that the story has shifted back to the present.
- Chapter 24 ends with a close-up on Nanasawa's thumb, which still has the injury from when she stabbed herself with a mechanical pencil in the present, proving that her return to the present was not a dream.
