Second season of Seirei Gensouki.

After being aggressively rejected, Momo Ayase finds herself sulking when she stumbles across a boy being bullied. Saved by her rash kindness, the alien-obsessed boy attempts to speak to her about extraterrestrial interests he believes they share. Rejecting his claims, Ayase proclaimed that she instead is a believer in ghosts, starting an argument between the two over which is real. In a bet to determine who is correct, the two decide to separately visit locations associated with both the extraterrestrial and the supernatural—Ayase visiting the former and the boy visiting the latter. When the two reach their respective places, it turns out that neither was wrong and that both aliens and ghosts do exist. This marks the beginning of Ayase and the boy's adventure, as they attempt to fix the surreal, supernatural, and extraterrestrial elements around them to return to a normal life. [Written by MAL Rewrite]

Second season of Blue Lock.

The young Chu Mu was plotted against and implanted with the White Nightmare by Xia Guanghan, and was taken to the Green Nightmare Island. Under the control of the Nightmare Palace, he and his soul pet Mo Xie were forced to fight bloody battles for survival, and eventually became the youngest king of the Prison Island. He became famous in front of the princess and was promoted to the Nightmare Master of Henghai. Chu Mu had some freedom and immediately returned to Gangluo City to save his family from danger. At the same time, Mo Xie's talent attracted Xia Guanghan's covetousness. Chu Mu fought again, and after a narrow victory, he was saved by his mother whom he had not seen for many years... (Source: Bilibili, translated)