Pound Cake on Sunday

In their two-person household, Takeyoshi's the one who keeps everything running. So when his widower dad says he's inviting a coworker over, he gets annoyed at having to do more housework...but that's not all! Who exactly is this "Nishida," and why does Takeyoshi's dad never shut up about how pretty he is? Could his dad be harboring a little crush...and could Takeyoshi feel the same? (Source: Futekiya) *Note: Includes one extra chapter.*