There's also 'Citrus Hearts'. It's great because it focuses on the relationship between the characters in a very emotional and detailed way. The author does a wonderful job of showing their growth and the challenges they face in their relationship.
It depends. If you're reading manga on legitimate websites that have the rights to distribute it, it's not illegal. However, if you're getting it from illegal torrent sites or unlicensed platforms, then yes, it's against the law.
The legality of reading manga online depends on the source. Legitimate platforms with proper authorization make it legal. But most random sites offering free manga are likely illegal and can get you in trouble.