“Puzzle” by ROUND TABLE feat. Nino - (Welcome to the N.H.K)

“Sakasama Bridge (逆様ブリッジ)” by Suneohair - (Arakawa Under the Bridge)

“Akai Coat (赤いコート)” by Suneohair - (Arakawa Under the Bridge x Bridge)

These are some of my favorite OPs/EDs.
I really like the songs from both Suneohair and ROUND TABLE feat. Nino, and Welcome to the N.H.K is one of my favorite series :)