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1再度复活!阿松
The Matsuno Brothers travel to the future and see they're going to get fat, greedy and finally beaten up by angry girls. They make an effort to change their ways, but they are destined to be beaten up.
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2祝·就职!! / 超级洗衣剂
The siblings try their hand at internet streaming. Later, Iyami uses an experimental detergent to keep his suit clean, but it's drunk by the siblings and makes them invisible.
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3原始松(#1) / 轻松和一松 / 豆豆子的挑战
Choromatsu and Ichimatsu struggle to make conversation with each other. Later, Totoko takes part in an eating contest but keeps getting distracted by the brothers.
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4原始松(#2) / 松造和松代
Noticing Matsuzou acting strangely, the siblings discover that he is worried that there's not enough spark in his marriage with Matsuyo. Feeling he should return to a more innocent time, the boys give Matsuzou a masterlcass in being a virgin, albeit with no success. Matsuzou inevitably resorts to getting a love potion from Dekapan, but ultimately decides against using it, managing to sort things out with Matsuyo by himself.
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5夏日的小松先生
A series of summer-themed skits. Jyushimatsu takes part in radio exercises, Iyami and Chibita try to beat the heat, Todomatsu keeps finding himself exiled by his brothers, Karamatsu tries to inject summer into everyone's lives, and the sextuplets attempt to talk to girls on the beach.
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6井矢见来了 / 想要朋友
Iyami goes to sextuplets for help after falling on hard times and Hatabou searches for a friend.
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7原始松(#3) / 三国志 / 小松和椴松
In a parody of Romance of the Three Kingdoms, Emperor Osomatsu and a group of bizarre generals attempt to take over the country. Meanwhile, in the real world, Osomatsu joins Todomatsu at a mixer, struggling to keep his perverted instincts in check.
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8合成悠 / 十四松和海豚 / 豆豆子和喵(#1)
Dayon uses Dekapan's latest invention to merge various people together into new beings, with a fiendish end goal in mind. Jyushimatsu becomes determined to get a job at a sea park as an actual dolphin, receiving strict training from a female trainer. Meanwhile, Totoko and Nyaa encounter each other at Chibita's oden stand.
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9宣传发动! / 游戏中心井矢见 / 豆豆子与喵(#2)
Ichimatsu struggles to get any sleep with his brothers being noisy all night and refusing to turn off the light. Unable to take anymore, Ichimatsu starts monitoring the brothers' courtesy towards each other, leading Osomatsu to get criticized the most. Later, Iyami proves his skills at the arcades by playing games at their highest difficulty.
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10空松和兄弟 / 新员工豆豆子 / 录音松先生
Karamatsu tries to take on various requests from everyone to look like a reliable brother, only to take on more than he can handle, so Choromatsu tries to teach him how to refuse. Totoko begins working at a company, proving to be a handful for her superior Todomatsu. Later, a pair of seiyuu attend a dubbing session of an episode of Mr. Osomatsu, witnessing how the sextuplets do their work.