Kozure Ookami (INOUE Satou)
Freshly divorced single dads find themselves as neighbors and quickly become friends, but when attraction comes into the mix, they break things off. A couple of years later, when one is divorced for the second time, they meet again by accident and give in. Confusing at times, but better on re-read if you take it slow. There's a second story about a businessman falling in love with a club manager, and one about people who cheat to make each other jealous. The ex wife in the main story made me laugh, ahahaha. The guys stay together to become grandpas, which was sweet. And apparently two of their kids are sleeping together. Since they lived together since infancy as brothers, that probably needs a content warning for implied incest.
Ookami No Ketsuzoku