This anime is not about any time traveling machine but it would definitely bring you back to your memories when you used to play with your friends and discover new things with them. Anohana: The Flower We Saw That Day is a must watch list for those who are kind of lost tracks with their old friends. I think giving or recommending this anime to your old pal is a good way to make him/her reminisce about your friendship days.
Forming a group and leaving it float into the water is not something that a leader should do. A group should always be disbanded in the best and the right way. Friendship should always be the tightest bond of every relationship, and after that goes strength, realization, straightening flaws, building trusts and pretty much everything that is on the line.
I don’t want to cover my eyes but yeah. Do you really think that 11 episodes and a movie is enough to make this epic and heart-warming anime perfect? I think a season 2 or an OVA series would be the best choice or maybe the wish of all anime’s loyal fans.