Like the topic says I was hoping to read a shounen/seinen where the guy falls in love with his senior/senpai/older woman. Something like Shuffle and Summer Wars.

I already know about [m]UnbalancexUnbalance[/m] and Good Ending but they have changed courses a bit from what I wanted.

While I don't mind a student teacher relationship, it would be better if the Love Interest was just a few years older than the guy.

Thanks

You could try Anedoki.

There's also a tag for it, if you want to look through that.

Watashi no Shounen
The Prince's Cactus

But....its both shoujo, Couldn't find anything else that I had already read

But: Koimoku , seinen. haven't read it myself, but I was going to, it's still ongoing.

[thee, what a lot of buts xd]

From Amazume Ryuta

Koi wa Misoji o Sugite kara
it is finished, too....

and if just the age difference is important then

Toshiue no Hito
but the girl looks half her age

Beautiful fascination is better than love. it's a manhwa though

Seconded, even if you're a shounen/seinen fan like me you'll still love this one.

Puppy Lovers

It's from the same author the did Nana to Kaoru so expect it to be ecchi