Please Save My Earth Deals with a LOT of time-travel like themes... Not time-traveling exactly, but it has a lot of time-travel like themes, and half the time you think your time-traveling.. its fairly confusing, but you understand it by the end.

Does the walker choose the path, or the path the walker?

If you're in for a oneshot kinetically charged with action, romance, awesome, even some gender-bending with a twist and a satisfying ending, go for Boukun Tyrano-san.

Quote from James Knight

If you're in for a oneshot kinetically charged with action, romance, awesome, even some gender-bending with a twist and a satisfying ending, go for Boukun Tyrano-san.

seconded, great one volume