Penguin's Memory: Shiawase Monogatari

Returning from the Delta War, Mike Davis is left traumatized and adrift in life. Leaving his home town, he eventually winds up in Lake City and takes a quiet job in the local library. There, he meets Jill, a young woman with dreams of being a professional singer. She's already involved with a young surgeon practicing at her father's hospital, but she finds herself attracted to the withdrawn Mike. As she falls in love with him, she tries to break through the wall of sadness Mike has built around himself, but outside forces are conspiring to keep the two lovers apart.