Hello there again, Raiyumi. This is a wonderful game you've got here. You have a very consistent style, and indeed this is reminiscent of previous games like "A Kitty Dream" and "The Valley Rule," though much shorter than both of those. Briefly put, this game is charming and challenging, very fitting for short play for those who don't have much time in their hands. Of course there's more to say than that, and I will go through all of my opinions shortly.
Art Style
When I started playing this game I was thinking it seemed much like, "A Kitty Dream," and after I went to check who the creator was, it was you. My point is that you have a very distinctive art style and that's marvellous since it sets your game apart from other people's. The very distinctive art style is a definite plus.
Music
The music, though it does not change, is very atmospheric. It's very evocative of classic RPG games like Chrono Trigger or The Legend of Zelda series. I have not many issues about the music except that it doesn't seem to loop very well. There's a very awkward split second of silence when it loops, and while this is not as noticeable while you're playing, it is there. Nevertheless, I don't think this takes away much from the game.
Gameplay
This is the best part of this game. There's a lot of exploration to do, and many mildly challenging puzzles to complete. As usual, the actual gameplay is executed very well. The movement is seamless and the challenges are satisfying. The crayon-throwing in particular reminded me of Depict1, and judging from previous reviews by other players I'm not the only one who was reminded of Depict1.
The ability of the "weapons" to stick to the wall and be used as a platform was the selling point of Depict1. It is the same for this game, and like in Depict1 they can even be stacked to create bridges. This is a very interesting feature, and I also like how the function of crayons are not really explained to the player and the player is made to figure it out themselves.
While the gameplay is good, I can't help but feel it's a bit lacking. This game feels like a lesser version of Depict1. While it is good in and of itself, but compared to Depict1, there is less to do and it is not as challenging, and furthermore there is not as much of a storyline. This is understandable given the 72 hour period you were given to complete this project, so I won't be too harsh on that aspect. I think you did well considering.
Additionally, it would have been nice if the secrets actually served a purpose, i.e. if you collect all 4 of them you get access to a special thing that you wouldn't get if you didn't collect all of them. As it is, collecting them feels pointless even though you get a medal for completing this task. A special cutscene or a hidden room would have sufficed.
Furthermore, while your games have been very well done, I'm starting to think that you might benefit from a bit more progression. I'm not saying that your style is going stale, I just think that it would be interesting if you could explore more different aspects of platforming. You're so creative I feel like you can do much more than this! I'm not saying the platforming mechanics here are bad, but they are lacking in comparison to some of your previous projects. It's still very creative though, I'm just saying it would be great to see more unique gameplay straying away from your usual Metroidvania style of platforming which I believe you have perfected at this point.
Despite me offering some criticism I do still think that this is a good game, don't get me wrong. Overall I have an extremely positive opinion of this piece of work and it is very well-deserving of its front page status. Godspeed, and please never stop making games.