I'm looking for stories in which a young boy has a crush on an older guy. The older person may or may not indulge them, such as saying "If you still like me in 10 years" or hangs out with them more without allowing anything intimate. They can be any age as long as there is an age gap big enough that it would be seen improper for a relationship to happen (6 year old with an older sibling's friend, 15 years old with a teacher, etc.)

Then there is some form of time skip in which the kid has grown up and is looking forward to starting a relationship with the older guy, or perhaps vice versa. I would prefer minimum drama (I don't like angst piled on angst, I'm reading for the love not the tears) but don't mind the usual cliche stuff if it's toned down. Also, feel free to add in unrequited or puppy love, the characters don't have to end up together, I'm mostly looking for the promise of ending up together.

Suggestions don't have to fit the request perfectly, but I would like something at least 10% similar. =P I'm already familiar with Mishima Kazuhiko's works and I would prefer no suggestions for Minami Haruka's work.

perhaps castle mango?

Dare ga Omae wo Suki dato Itta - the first story is exactly as you requested

Ai no Kotoba wo Uragaeshi, ch. 1-2

Tenshi no Tamagoryouri and the sequel Kekkon Dekinai Otokotachi

Meguriau yo Baby, not really a time skip, the teacher makes him wait until graduation
Honki Ja Nee Kara, also not really a time skip, they wait

Voice or Noise, but the time skip occurs between vol. 2 and 3. Volume 3 was not scanlated, and though the series was licensed; I don't know it if is still available.

In the following stories, the boy had a crush in the past, but the story starts when he is already older:
Empty Heart
Boku no Shiru Anata no Hanashi, ch. 1-3
Furue Tsumore Shiawase no Hana

I think Yume Musubi, Koi Musubi could fit your request ^^

Thanks for all the suggestions. =D

Any more out there?

You've already read most of the ones I could think of, but to mention them here:

Not Equal is not really what you asked for, but somehow it was the first one I thought of.
Ore ni Koi Shite Dousunda was the second. Also only about a %10 match:
Super Lovers
Kimi ga Koi ni Ochiru
Sangen Tonari no Tooi Hito
Sumanai!! Masumi-kun

Otherwise not on your lists that I could see;

seconding Boku no Shiru Anata no Hanashi
If you haven't read it already, you probably already decided you aren't interested, but Junjou Terrorist from Junjou Romantica is something like that
Love Skit

All good so far, any more that people can think of?

Bump.

Sounds like you should read "Baby I love you" 😃

Yuuwaku Sentiment, the second story.

bump? 🙂

It's the Art of Time, it's the Art of Life--
Of the player and the craftsman,
Of the writer of songs, of the creator of love,
Of those who will follow, of those who led,
There's no other way in the world ahead ♥

Bumping anyway xD

It's the Art of Time, it's the Art of Life--
Of the player and the craftsman,
Of the writer of songs, of the creator of love,
Of those who will follow, of those who led,
There's no other way in the world ahead ♥

Mayonaka no Oyatsu by Kanda Neko
Itsuka no Himitsu, ch 4-5

Zurui Otoko (Crafty Man)
Hajishirazu Na Yoru

Ren'ai Nenrei (only an age gap)
Hada no Ue no Renai Jijou *(only an age gap)

Abiru Junjou, age gap, can't remember if there is a time skip
Anohito to Nitenai Kuchibiru - there's an age gap and a time skip as I recall, but I thought this story was really creepy and the art is ugly.
Akuma wa Hohoemu - not exactly, and you probably know this one, but the seme is waiting for the uke to grow up and fall for him. Time skip only if you count between volumes (prequels Kawaii Akuma and Itoshii Akuma where they are side characters).
Dekiru Otoko - the seme is a 'daddy long-legs' to his underage lover. They are waiting until the boy is older to 'go all the way'. No time skip.
Tantei Aoneko - let me explain. Detective Bluecat has a preteen servant (I think he's 12 but I forget) Tigerman Littlewoods. There is a dream or fantasy sequence in which Tigerman grows up overnight. It's just one story in this wild ride.

That's all I can think of. I need to read some new stuff. 😢

@anq - Welcome to the forums! It's really easy to add links to titles, just click the BBCode 'm' before and after each one.

Kusatta Kyoushi no Houteishiki with same persistent uke character like Ao from Yume Musubi Koi Musubi

Zettai Unmei Houteishiki