These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
The commercial for Kimi Tsunagi Five M, which basically consists of the band members wearing sunglasses and randomly improvising while Gotoh shrieks things like "THANKS TO SOCIAL PROBLEMS, WE'RE ALL BROKE" into the microphone.
Soon after the earthquake and tsunami in Japan in 2011, Asian Kung-Fu Generation wrote and released "On the Sand" to reach out to the victims. The only instruments are acoustic guitar and keyboard to keep the focus on the message.
Ending Fatigue: Several of their songs sound like they're about to end but start up again after a few seconds of silence, such as "Shiro ni Someru", "Tightrope", and the live version of "Uso to Wonderland". There's also "Mugen Glider", but considering the title (mugen means "infinity") it's probably deliberate.