''Golden Days'' is a shoujo manga with ''shounen ai'' undertones created by Takao Shigeru. It was serialized in ''Hana to Yume'', and collected into eight volumes.

The story is about Soma Mitsuya, who cares only about his violin and his hospitalized grandfather. One night his grandfather’s condition suddenly worsens, an earthquake hits, and Mitsuya finds himself lost and alone in Japan of 1921. Jin, a childhood friend of his grandfather, mistakes Mitsuya for his grandfather and takes Mitsuya home.

!!Contains these tropes:
* BigFancyHouse
* {{Bishonen}}
* [[spoiler: BittersweetEnding mixed with EarnYourHappyEnding for some characters.]]
* ButNotTooForeign
* CoolBigSis: Yuriko
* ChekhovsGun: [[spoiler: Yoshimitsu's chessboard as well as several photographs throughout the series.]]
* [[spoiler:[[DidNotGetTheGirl Did Not Get the Guy]]]]
* DespairEventHorizon: almost all of the main characters at some point.
** [[spoiler: Yuriko in particular after one of her sons dies in the war.]]
* DomesticAbuser: Kei's father.
* DontYouDarePityMe: Ubukata Matsuri to Aiko.
* [[spoiler: DownerEnding: By the time Mitsuya returns to his time every single person (excluding Yoshimitsu) he met in the past is dead - which is all the more sad, since there was a possibility they would still be alive because he only went about 70 years back in time.]]
* HookerWithAHeartOfGold: Tsuyuko.
* IdenticalGrandson: Mitsuya and his grandfather are identical.[[spoiler: [[SubvertedTrope Subverted]], because Mitsuya actually is Yuriko's biological greatgrandson, not Yoshimitsu's.]]
* InSeriesNickname: ''Knight''(Mitsuya/Yoshimitsu), ''Bishop''(Aiko), ''King''(Jin) and ''Queen''(Yuriko)
* MyBelovedSmother: Mitsuya's mom is really protective.
* ReplacementSibling: Aiko
* SetRightWhatOnceWentWrong: Mitsuya thinks this is why he went back in time. [[spoiler: Though it takes him a very long time to figure out what event he was supposed to change.]]
* TheAtoner: Kei
* TheRoaringTwenties
* TimeTravel
* {{Time Travel Romance}}: between Kei and Setsu & [[HoYay Jin and Mitsuya]].
* TraumaticHaircut: [[AxCrazy Aiko's mother]] cuts off her hair to make her look like her [[ReplacementSibling dead son]].
* UnrequitedLove: Jin, first for Mitsuya's grandpa and later for Mitsuya himself.[[spoiler: Though it might not count as completely unrequited by the last volume.]]
* UsefulNotes/WorldWarII
* WorthLivingFor: [[spoiler:Knowing that Mitsuya will be born in Japan in the ''future'' is the only thing that keeps Yuriko from giving up on the world after her son dies in WWII. ]]
** [[spoiler: This also keeps Jin going during the war.]]