I think this was an extra on the Digimon Adventure boxset, but I'm not sure. It's the first ending, used from the start of Adventure until episode 26.
Video obtained from the digimon_japan LiveJournal community. Translation of lyrics below.
Song: I Wish - 前田 愛
English translated lyrics:
When I place a wish on a star and my pride on the wind
I'll surely be able to see a tomorrow that today can't erase
I wish
Why am I here?
Please tell me right now
The things we can see aren't everything
I'm shivering in the cold, so I cover my arms with my jacket
Before I know it, it becomes transparent
And turns into hope
When the rain of the future wets my cheek, I remember
Become passionate, that day, that time
When I place a wish on a star and my pride on the wind
I'll surely be able to see a tomorrow that today can't erase
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