Saver, Threads of Time Recommendations
In both mangas, the main character gets thrown back in time for a specific purpose which gets to be revealed later.. both include war, romance, revenge, great characters and brilliant plots that offer great reads for MAL users who love this genre :)
These stories are about a teenager from our time that excels in kendo. The similarity between the stories doesn't end here: Both of them drown, but wake up in a medieval era and realise they are tangled up in karma, faith or destiny. So these teenagers engage in war and use their kendo-skills to save the day.
Threads of Time has a realistic setting - the Korean war with the Mongols.
Saver has a less realistic setting: there is a fantasy-like race with inhuman powers.