1. is masturbation ok?

2. adultery is wrong even in your heart. but what if you watch hentai? is that ok? since there cartoons?

Troll alert went off, but just in case it's not.

1.) No, masturbation is a sin.

2.) Regardless, lust for anything, including a pencil or pen, is a sin.

Matthew 5:28
New Living Translation (NLT)
28 But I say, anyone who even looks at a woman with lust has already committed adultery with her in his heart.

1 Corinthians 6:18
New Living Translation (NLT)
18 Run from sexual sin! No other sin so clearly affects the body as this one does. For sexual immorality is a sin against your own body.