Keima

From OMGWiki

Keima Morisato is Keiichi and Megumi's father. His skills as a mechanic and racer are on par with those of an expert, and cannot be around any other women except his wife Takano and his daughter Megumi. For some odd reason he also tolerates Belldandy, which could be due to her overtly good-natured personality, or the fact that she is a goddess. This makes Takano very curious! Takano does reveal why she and Megumi can get close to Keima, which leads to an interesting implication (though I won't reveal it, gotta read it for yourself!).

Keima demonstrated in the manga that he is a better mechanic and driver that Keiichi. K had never even pulled even with his dad! Chihiro asks K what Keima does for a living, expecting that he owns a bike shop or something along that line, but it turns out that Keima is a glass blower. We see Takano wearing an apron that has a fish logo and says Glass Cat - Glass Factory, which may be where Keima works, and that could mean that Takano works with him.