Seeing Mount Fuji appear between the clouds before landing in Narita somehow became one of the most memorable moments of my flight to Japan.

No, you usually do not need to clear immigration during transit in Singapore. Here’s my transit experience at Changi Airport from Jakarta to Tokyo.

I’d say Omoide Yokocho works better as a place to walk through and enjoy the atmosphere, rather than somewhere I’d personally choose to sit and eat or drink.