If you are looking for this type of content, it is much safer to use established, moderated platforms rather than clicking "Free Download" links on random blogs:

Always check if the game has a Patreon or a direct developer website. Downloading from the source is the only way to ensure the file hasn't been tampered with. Conclusion

Winning battles unlocks currency, which is then used to "bond" with characters.

These bonds usually unlock the adult content or "fanservice" that the title implies. The Risks of "Free Download" Searches