Takemichi's experiences in the past greatly influence his relationships in the present. The challenges and hardships he faces during his time travel to the past shape his perspective, attitude, and behavior in the present timeline. His interactions with certain characters in the past also impact his current relationships with them, as he tries to prevent or change events that have a profound effect on his friends and loved ones. Ultimately, Takemichi's past experiences play a significant role in shaping his present relationships and the decisions he makes to protect those he cares about.