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![](https://image.tmdb.org/t/p/w342/3o6W53edDLWtYOE2fCLK3154mIV.jpg)
Piece of Cake
Mutta, Hibito and Serika accompany Sharon to a neurologist, where Serika fears she may be suffering from amyotrophic lateral sclerosis just like her father. As Sharon is admitted for more tests, Serika explains the details of ALS to Mutta, who is shocked to learn that it may one day kill her. As such, Mutta finds himself unable to concentrate on his written test and scores terribly. Following her examinations, in which she is properly diagnosed with ALS, Sharon is visited by Serika, who tells her about her father and motivates her to work hard on her research despite her illness. As Sharon heads back towards Japan, Mutta reaffirms his promise to help build her telescope. Later, Serika tells Mutta about a similar promise she made to get up to the ISS and develop a treatment for ALS.
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![](https://image.tmdb.org/t/p/w300/7scIzrYumE6M7g1aXVfJrewig69.jpg)
![](https://image.tmdb.org/t/p/w300/qAFZFYzKOtGPV3u4AuuYl2fYVFh.jpg)
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Other episodes for this season
![A Big Brother Should Always...](https://image.tmdb.org/t/p/w300/wvis8s6QwpgoeY1UXnTJOmsXq2T.jpg)
![Stand on the Moon Together Alive](https://image.tmdb.org/t/p/w300/lS0jolYX7mGmcOD87fbtq8A4Frl.jpg)
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![Distant Goal](https://image.tmdb.org/t/p/w300/3LvoEeMEkVUZ7pCIiEWbCpY89PM.jpg)
![Promise to Drink](https://image.tmdb.org/t/p/w300/kWVEMCy5yrzimxa4UyISfezU7OS.jpg)
![An Engineer's Switch](https://image.tmdb.org/t/p/w300/pevdntCFXS6TEw8EmZo69xS22cW.jpg)
![Earnest Failure](https://image.tmdb.org/t/p/w300/cMFJerPVvLadhAe9oHfk14wcbEE.jpg)
![Promise Sign](https://image.tmdb.org/t/p/w300/8GMRPgNEvl9CRWYwbp3c2RAX7EM.jpg)
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![Those Who Wait for Hibito](https://image.tmdb.org/t/p/w300/2RPk0tvDN8SL5Kp18XlQ4BivozC.jpg)
![Those Who Dream Far](https://image.tmdb.org/t/p/w300/y53W4TQ8jiTSBe4uklSNab3bf0j.jpg)
![Young Excitement](https://image.tmdb.org/t/p/w300/a43jXtH4RKyoz4QzpdLeXy691Pq.jpg)
![Piece of Cake](https://image.tmdb.org/t/p/w300/g5XL06cpu5aXpTPgx2TfvgB02v0.jpg)
![Wheelchair Pilot](https://image.tmdb.org/t/p/w300/dpHXykdMdTYTRhnzEmcOla0AEZu.jpg)
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![Next to Hibito](https://image.tmdb.org/t/p/w300/mkM1amYxxiwDJsvT1oAfPcfL8LF.jpg)
![Determination to Give Up](https://image.tmdb.org/t/p/w300/pZpvWfNiXFQ0QNJXybhWc0gkIa3.jpg)
![Rehearsal](https://image.tmdb.org/t/p/w300/gdwpTH392TbghlXbCXrFAj35aNE.jpg)
![Hibito's Disorder](https://image.tmdb.org/t/p/w300/iPahkXkjvQTTpzriUEOgYIx5Y3U.jpg)
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![Olga](https://image.tmdb.org/t/p/w300/gUjq85d5Q3qyul7wvoI6sqyLMSK.jpg)
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![Won't Go Away](https://image.tmdb.org/t/p/w300/gb4cDDJh0hUUIGn19hUB16io24n.jpg)
![The Ultimate Astronaut](https://image.tmdb.org/t/p/w300/dPoYyNav5rcIkyBCAWRxI155ffG.jpg)
![Life Changes, Promises Don't](https://image.tmdb.org/t/p/w300/jcBPFhgKooV5BSXAX7aauBqHAtJ.jpg)