You might like 'Skip Beat!'. It has a similar focus on the main character's growth and the various relationships they form. The storylines have a touch of comedy and drama, similar to 'Last Game'.
Some similar manga could be 'My Dress-Up Darling' and 'Wotakoi: Love is Hard for Otaku' as they focus on relationships and have similar art styles.
I think 'Kimi ni Todoke' is somewhat similar. Both have heartwarming and innocent storylines.
You could try 'Kimi ni Todoke'. It shares some similar themes of relationships and character development as the ones you mentioned. Also, the art style is quite charming.
I'd recommend 'True Beauty'. It has a similar charm in terms of character development and plot progression as 'Last Game'.
The 'Last Game' manga ends with a combination of achievements and emotional resolutions. The characters' growth throughout the story leads to a fulfilling conclusion that many fans appreciate.
They have some similarities but also distinct differences. 'Last Ranker' has its unique plot and character development compared to 'be the last one'.
It might offer unique and unconventional storylines or art styles that attract certain readers.
I'd suggest 'Terra Formars' as it shares themes of a challenging environment and human perseverance, somewhat like 'Last Human'.
The Last Game manga and Manga Rock may have no direct connection. Manga Rock is a platform, while Last Game is a specific manga title.