Rumor Guide - (Future) Trunks Can Reach Super Saiyan 2

Kanzenshuu provides the back history, context, and facts behind Trunks reaching Super Saiyan 2 (both when he did and when he did NOT!)

Will there be a Dragon Ball Super season 2? Everything we know

Dragon Ball Super: How did Future Trunks become a Super Saiyan 2?

Daizenshuu EX - Guides - Transformations Guide - Saiyan

The 10 Best Dragon Ball Z Characters - IGN

Tidbits Trunks Side Story

Trunks Zips Into Battle With First Screenshots For Dragon Ball Z: Kakarot - Siliconera

Dragon Ball Super News, Rumors and Latest Information

Readiness to Defy a God Super Saiyan Trunks (Future)

Future Trunks (Dragon Ball Super/Manga/With Super Saiyan 2) vs Super 17 (Dragon Ball GT) : r/PowerScaling

Do Trunks and Goten ever turn super saiyan 2? Why or why not? - Quora