Why is "The Rising of the Shield Hero season 1" trending?

Wikipedia Overview

The Rising of the Shield Hero is an anime television series produced by Kinema Citrus and directed by Takao Abo, with Keigo Koyanagi handling series composition, Masahiro Suwa designing the characters, and Kevin Penkin composing the music. The first season adapts the first five volumes of the light novel series of the same title written by Aneko Yusagi. The first season ran from January 9 to June 26, 2019, on AT-X and other networks. The season ran for 25 episodes and adapted the first five volumes of the light novel series, including parts from volume 6. It uses four pieces of theme music: two opening themes and two ending themes. The first opening theme is "Rise", performed by Madkid, while the first ending theme is "Kimi no Namae" (きみの名前), performed by Chiai Fujikawa. The second opening theme is "Faith", also performed by Madkid, while the second ending theme is "While I'm Next to You" , performed by Fujikawa. For episode 4, Asami Seto sang an insert song titled "Falling Through Starlight" as her portrayed character Raphtalia.