Maybe 'Fullmetal Alchemist' comes close. Both have complex worlds and characters facing challenging situations that test their limits.
Code Geass might be similar. It has elements of strategic thinking and complex characters like in Deathnote.
I'd recommend 'The Promised Neverland' as it shares some similarities with 'Solo Leving' in terms of its engaging plot and unexpected twists.
You might find 'Starry Night' comparable. Both share similar emotional depth and storylines centered around complex relationships, similar to what you get in 'Wakeari Kiss'.
Well, 'Fruits Basket' could be comparable. Both have engaging storylines that deal with personal growth and human connections. Also, the character development in both is quite captivating.
Yes, there are a few. 'The Gamer' has some similarities in terms of unexpected plot twists and heroic challenges.
I think 'Sword Art Online' could be similar. It has elements of mystery and decision-making like in 'Judge and Doubt'.
Perhaps 'Ao Haru Ride' is similar. It has a similar focus on the ups and downs of young love and the challenges characters face in expressing their feelings, much like in 'Forbidden Kiss'.
Well, 'Your Lie in April' might be comparable. Both explore deep emotions and have engaging storylines that draw you in.
Another option could be 'Tokyo Ghoul'. It has a darker tone and characters driven by a need for vengeance. The story is full of twists and turns that could give you a similar experience to Revenge Classroom.
One manga that could be similar is 'My Hero Academia'. Both have action, unique characters, and themes of growth and heroism.