Has been missing, and Chihiro's memory is very similar to the "mother", but 4c said Chihiro was raised by Amazon.
The eighth sentence in Haruka Mizusawa's memory, because he was pregnant with Jin Takayama's child, he was temporarily taken care of by Jin Takayama's teacher Hoshino in Jin Takayama. He learned that Jin Takayama was going to expel his child and turned to Haruka Mizusawa and Hoshino to hide Jin Takayama, while he secretly gave birth to Chihiro and left with Chihiro.
In Chihiro's later memories, he finally admitted that he had Amazonian lysogenic cells when he was young, and Nanaha Izumi let him eat them himself because he was hungry. Chihiro lost control, became a protozoan (tarantula) and ate his mother Nanaha Izumi.
At the end of the tenth sentence, Haruka Mizusawa and Shui Ze Mi Yue discovered the identity of the protozoa, which seriously hurt Haruka Mizusawa and left after being summoned by Mi Yue.
End of character:
In the twelfth sentence, Jin Takayama, who wants to get rid of coma, is scared away by Jin Takayama. Jin Takayama learned from Haruka Mizusawa that Nanaha Izumi has become Amazon. The thirteenth sentence, fighting with Yingshan people at the seaside, was completely defeated by Jin Takayama.
The expulsion class used the time when the fracturing bomb was released to kill Nanaha Izumi, and prevented the fracturing bomb from attacking and preventing Jin Takayama from being killed by the fracturing bomb. After Nanaha Izumi pushed Jin Takayama away, Jin Takayama's inner dialogue finally broke out.