Y; Age Gap

Hate main couple but short stories after Ch. 3 are fine. Like Ch. 7 best.
Ch.7: A salary man's boyfriend cheated, then broke up with him. Suffice to say, he doesn't take it well. 6 months later, a friend asks him to tutor his younger cousin.

The whole thing's not... terrible... but I really only like Ch.5.
Ch.5: A businessman, coming home after having his heart broken, finds a young gigolo who was kicked out of his current residence.

A lonely university student was leaving his apartment when he comes across a very strange man waiting outside his door. Claiming to be the injured cat that the student had helped previously, the man waited persistently outside the door 'til the student relented and allowed him stay as a pet.

Ch. 1, 4 Wagamama Basic

The other stories are okay just prefer Ch.4: Sparkling Sugar
A businessman is rushing to work one day when he slams into a glass door. A security guard starts laughing nearby and so they start to get to know each other.