A recap in a novel is basically a summary or review of important events or plot points that have happened earlier in the story. It helps readers remember and understand better.
Sure, Oregairu has a manga. The manga expands on the story and characters from the original source material. It offers a different perspective and more detailed plotlines.
Well, Infinity War's story is really complex. Thanos believes the universe is overpopulated and decides to 'balance' it by using the Infinity Stones. The movie shows different groups trying to protect the stones. The Guardians of the Galaxy get involved when they meet Thor. On Earth, Vision has the Mind Stone which is a target. Iron Man, Spider - Man and others go to space to fight Thanos. However, despite their best efforts, Thanos is too strong and his actions at the end are a huge shock, leaving the universe in chaos and many beloved characters turned to dust.
A recap of 'Life Sentence' in 'West Side Story' could involve going over the main plot points. For example, the love story between Tony and Maria, which is doomed from the start due to the gang rivalries between the Jets and the Sharks. The violence and tension in the streets, which is like a form of life sentence for the characters who are trapped in this cycle of hatred. Also, the role of the different characters like Riff and Bernardo and how their actions lead to the tragic ending, which in a way is a life - changing and almost life - sentencing conclusion for the remaining characters.