anime like berserk 1997 in terms of story

[WARNING MATURE CONTENT] NOTE: YANDERE IS HERE Some Heroine might love MC too soon. But does love need a reason or time? If you already love someone, this reason is useless. ---------------------------------------------------------------------------- What happens if the game you've been playing for a long time turns out to have a world of its own? --- A boy who experienced death in a strange way. Reincarnated into the eroge game he had played before. Reincarnated as the protagonist's best friend character in the story, who will be killed by the protagonist himself to make the protagonist strong, doesn't make him give up, with help of the system he has now. Watch his journey in conquering the hearts of heroines and saving the world. Character image sees on my discord server. ----- Warning: This Novel is only FICTION, don't compare it with the real world. Strict warning!!!!!! if you don't like where the 10-year-old MC has puppy love. Don't read this novel. You know, a lot of novels start very young, and mine is one of them. The MC in this novel has very slow character development. You probably won't like this. You Have Been Warned. Notice: There are no genres like Yuri or LGBT here. I also don't write genres like Netorare and others. I'm not a person who likes things like that. ---------------------------------------------------------------------------- Grammar might be a bad thing in this novel but bear with it. The beginning of the novel is a disaster, this is my first novel, plus English is not my first language. ---------------------------------------------------------------------------- [English is not my first language, so if there are any wrong words, please forgive me.] [The image above is not mine. If the owner doesn't want me to use it, you can tell me and I will change it.]