Hajime attempts to get a real job. Kaoru will be happy that she can explain what her husband actually does when people ask.
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Kaoru is a mean (and horny) drunk. Can Hajime keep her from making a fool of herself? No. But there are upsides.
I think it's hard to have serious buildup on anything over 7 minutes of runtime.
Kaoru collapses from overwork she's pregnant. Also, she needs to quit smoking. Hajime goes a little too far in caring for her until she yells at him to stop being fake.
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Kaoru is embarrassed at her incompetence at cooking. She gets help and advice from her father. (a pro.)