I forgot if it's yaoi or shounen ai but basically it tells the love story of two guys and they try to keep it a secret from their families, but then there's other stories too of their children falling in love, and their children's children falling in love.. Does anyone remember any manga like that? I have been trying to find it but I can't!

It reminds me so much of Complex, is that it?!

[img]https://31.media.tumblr.com/fed8f641faa089fa16ee883f5b18f006/tumblr_n09tpwWCYW1qk16e0o1_500.png[/img]
K n e e l .... This is the difference between your and my eye-level.
Rai from Noblesse