LINE is a price-protected token. It is issued by borrowing against locking a collateral. If the token's price on DEXes grows after borrowing, the user will be able to sell it for profit. If it falls, the user will be able to repay the loan and get their collateral back (less fees). This is what ensures price protection.
TVL: The TVL is calculated as USD value of the collateral locked for issuing LINE tokens, staked LP tokens of incentivized pools, and the balances of pending orders on the options market.